Our desks and chairs ---------------- (make) of wood.The pap

Our desks and chairs __are made_______ (make) of wood。The paper of books and newspapers __is__ also _made____ (make) from wood。Even some kinds of cloth __is made_________ (make) from it。Many people _burn______(burn) wood to keep themselves warm in winter。Indeed,wood _is_ (be) important in our everyday life。
Where ____does__ wood ____come__ (come) from?It _is taken____ (take) from trees which ____grow_________(grow) in the mountains。____Do_____ you ______know______ (know) how it ___is gotten_______ (get) to us from the mountains?
First of all,trees ____are cut_______(cut) down when they ___grow___________(grow) big enough。Then their branches ___are cut___ (cut) off,and logs ____are made_____(make)。These heavy logs ______are put____(put) together in different ways and ______taken_____ (take) down to the foot of the mountains。Some of them _________float____ (float使漂流) down the small rivers and others ____are carried____ (carry) down on trains。
Big trees _____are cut___(cut) down in the mountains every year。Then young ones ________must be plant_____ (must,plant) so that we ___can_ always ______have___ (can,have) enough wood。We have to take good care of mountains so that they __may__ always ___be covered_ (may,cover) with growing trees。
1。When I got to his office,I __________ that he_________ out。
A。told,had been B。was told,was
C。had told,was D。was told,had been 【D】
2。The vegetables didn’t taste very good。They ______ for too long。
A。cooked B。were cooked
C。had cooked D。had been cooked A。told,had been 【C】
3。The anti-Japanese war ______ in 1937 and it ______ eight years。
A。was broken,lasted B。broke out,lasted
C。break out,lasted D。broke out,was lasted 【B】
4。She was heard ________ an English song。
A。to sing B。sing
C。sang D。to be sang 【A】
5。These boxes are very heavy ___。
A。be carried B。carry
C。carried D。be carrying 【D】
6。The police found that the house ________ and a lot of things ________。
A。had been broken into,has been stolen
B。has broken into,has been stolen
C。had been broken into,stolen
D。has broken into,has stolen 【A】
7。Coal can ________ to produce electricity for agriculture and industry。
A。have used B。used C。be used D。use 【C】
8。John has never dreamt of _________。
A。taken to Athens B。taking to Athens
C。be taking to Athens D。being taken to Athens 【D】
9。Nobody likes __________。
A。laughed at B。laughing at
C。being laughed at D。being laughed 【C】
10。The bridge ___________ will be completed next year。
A。built B。being built C。is being built D。building 【B】