339.What disappointed us was that their determination finally ________.
A.gave off
B.gave out
C.gave up
D.gave in
340. There were so many people shopping in the mall that we _______soon after entered it.
A.got lost
B.got involved
C.got separated
D.got concerned
339.答案是B;give off发出，放出fgive out分费,公布，公开，用完，耗尽；give up放弃，自首; I give in 屈服，让步。此处表示他们没有决心,令人失望。
340.答案是C;根据语境，此处表示走散，分开。
