[ Tenses ]
Scientists _____ that some artificial photosynthesis ______ possible.
A. will hope / is
B. are hoping / will have been
C. hoped / was
D. hoped / had been
E. hope / will be
Select your answer:
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Grammar › ViewYou — two days ago. You are going to leave next Sunday. By the time you leave, you — nine days here.
A. arrived, will have spent
B. had arrived, will spend
C. arrived, will spend
D. had arrived, will have spent
Vocabulary › View
The correct meaning for contentious is
A. confused
B. controversial
C. controversy
D. popular