They ______ more enthusiastic about their work since their teacher"s return.
A: are
B: were
C: had been
D: have been
A: are
B: were
C: had been
D: have been
举一反三
- More than one passenger ______ in this accident. A: were injured B: have been injured C: was injured D: had been injured
- More than 3000 trees ___ in this area by the end of last year. A: have been planted B: had planted C: were planted D: had been planted
- More than one answer ___ to the question. A: had given B: were given C: has been given D: have been given
- _____ for their help, I'd never have been able to succeed. A: Had it not B: If it were not C: Had it not been D: If we had not been
- More than one passenger（）in this accident. A: injured B: were injured C: was injured D: have been injured E: had been injured