Since the road is wet this morning, _____ last night.
A.it must rain
B.it must be raining
C.it must have rained
D.it must have been rained
A.it must rain
B.it must be raining
C.it must have rained
D.it must have been rained
It _____ last night, for the ground is wet. |
[ ] |
A. must rain B. must have rained C. must be raining D. can't have rained |
A、can't have rained
B、can have rained
C、mustn't have rained
D、must have rained
A、hungry
B、angry
C、disappointed
D、exhausted
A、It is easier for him to find food and water in the wild
B、He likes the sun and rain and trees and flowers in the wild
C、He can enjoy freedom by living in the wild
D、He can avoid the danger of being kill.
A.说明微波背景辐射发现的必然性。
B.说明微波背景辐射发现的科学性。
C.说明微波背景辐射的发现在宇宙学中的意义。
D.说明微波背景辐射的发现在物理学中的地位。
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