The professor, together with several students, ______ working in the laboratory this time last week.
A: is
B: are
C: was
D: were
A: is
B: are
C: was
D: were
举一反三
- They were in the zoo last week.改为一般疑问句 A: Did they in the zoo last week? B: They did in the zoo last week. C: Were they in the zoo last week? D: Not they in the zoo last week.
- Several _______ new books were sold out last week。 A: of thousand B: thousands C: thousand of D: thousand
- An expert, together with some assistants, ________ to help in this work last week. A: sent B: was sending C: was sent D: were sent
- ______ members came to the meeting this week than last week.
- This is the material ______ in the laboratory last week. A: to be tested B: B. testing C: being tested D: D. tested