No one knows for certain how the first Americans arrived in _____ is now the United States.
| A．which | B．what | C．where | D．why |
— Jannie, you should finish your assignment before Friday, understand?
— _____. I will finish it on time.
| A．Got it | B．What | C．I can’t do that | D．I can’t promise |
The question is ______ we can help him out of the trouble
| A．that | B．how | C．why | D．what |
Many a student _____ going to attend the meeting tomorrow.
| A．is | B．was | C．are | D．were |
Is this factory _____ your sister used to work?
| A．that | B．the one which | C．where | D．the one where |
I would have met him ______ to the cinema last night.
| A．have I been | B．had I been | C．if I am | D．if I have been |