35. I really don’t know if she_____________it when she .
It is no longer a question now _____ man can land on the moon.
The building _____ in our school is for us teachers. Though there’s noise most of day, we still feel happy about it .
– I can’t get my car ___on cold winter mornings. ---Have you tried _____ the radiator with hot water?
– Did you notice John was not at work today? --- No. If _____working, I would have noticed it.
Hillen used to be very shy but she has grown _______it now.