By the end of this month we _____ ten lessons.
A: will cover
B: covered
C: will have covered
D: have covered
A: will cover
B: covered
C: will have covered
D: have covered
举一反三
- Seventy-five percent of the surface of the earth （） by water. A: are covered B: is covered C: have been covered D: was covered
- We have covered the insurance ______ All Risks.
- All the desks in the classroom________dust. A: are covered with B: are cover with C: are covering with D: covered with
- She ___________ the table with a cloth. A: cover B: covers C: covered D: has covered
- If all the continents and mountains were bulldozed fiat, the earth __ by water more than 12,000 feet deep. A: is covered B: would be covered C: could have been covered D: might had been covered