If they ______, our plan will fall flat.
A: are co-operating
B: had not co-operated
C: won’t co-operate
D: didn’t co-operate
A: are co-operating
B: had not co-operated
C: won’t co-operate
D: didn’t co-operate
举一反三
- The boy would have died, ______ on him without delay. A: if the doctor didn’t operate B: if the doctor wouldn’t operate C: would the doctor not operate D: had the doctor not operated
- 在做废气分析时，对各气体的吸收顺序正确的是（）。 A: CO→O→CO B: CO→CO→O C: CO→CO→O D: O→CO→CO
- He asked who was the man _______. A: being operated on B: operating on C: operate on D: operates on
- MFA吸收CO2过程中对于（）是惰气。 A: CO，CO，H B: CO、H、N C: HS、CO、N D: HS、CO、CO
- The procedures(程序) of operating a computer have been ______ several times, the results of which have made it much easier _______. A: cut down; to<br/>operate B: simplified; to be operated C: reduced; to be<br/>operated D: simplified; to operate