—I’m afraid I can’t finish the book within this week.
—Don’t worry. .
| A．Please go ahead | B．That’s right | C．Not at all | D．Take your time |
Mandy, ___ university student from Canada, teaches us ___ history of western art.
| A．an; the | B．a; the | C．the; / | D．the; a |
I'm sure you'd rather she went to school by bus，？
| A．hadn't you | B．wouldn't you |
| C．aren't I | D．didn't she |
Old-fashioned phones matter when wireless networks _____ in disasters.
| A．turn down | B．break down | C．turn out | D．break out |
Though I was tired out that evening, I _____ from falling asleep by the great pain in my knee.
| A．was prevented | B．had prevented | C．has prevented | D．am prevented |
.________, I have never seen anyone who’s as capable as John.
| A．As long as I have traveled |
| B．Now that I have traveled too much |
| C．Much as I have traveled |
| D．As I have traveled too much |