51________
A. so
B. as
C. and
D. yet
第1题:
【C5】
A.Therefore
B.When
C.Unless
D.Yet
第2题:
17.
A.too
B.only
C.also
D.yet
第3题:
第4题:
Last night’s TV news said that by then the death of the missing people ________(未证实)yet.(prove)
第5题:
No conclusion has been ______ yet.
A. achieved
B. reached
C. attained
D. arrived