题目内容
Since the forest has been destroyed by a big fire, a large ______ of trees ______ to be planted on the mountain.
A.number; has | B.amount; has |
C.quantity; have | D.sum; have |
C
解析
练习册系列答案
相关题目
My colleague has been recovering gradually since the operation, and it wont’ be long ______ he comes back to work.
A.before |
B.since |
C.after |
D.when |