___I don't think he is studying English in his room now.
____Oh, _________?
| A．does he | B．doesn't he | C．is he | D．isn't he |
___How time flies!It’s already twelve o’clock.
___ Oh,really? I ______ it at all.
| A．don’t realize | B．Didn’t realize |
| C．haven’t realized | D．hadn’t realized |
—Do you know the nearest way to the science museum?
—Sorry, I’m a stranger. This is the first time I _________ here.
| A．was | B．had | C．came | D．have come |
I won’t call you, ______ something unexpected haappens.
| A．because | B．While | C．unless | D．while |
_____ There is _____ like a holiday to make one feel relaxed.
_____ That's ______ so many people enjoy themselves traveling.
A. Nothing; why B.something; because
B. Nothing; because D.something; why