Sound travels ______ air ______ a speed of about 340 metres per second.
| A．over; in | B．through; at | C．by; at | D．through; over |
—How many times _____ he _____ NanChong?—Twice.
A. has, gone to B. has, bee to C. has ,been in
It’s really cold today, ______ ?
A. hasn’t it B. isn’t it C. is it
—He’s never been to an aquarium.
—_______ .
A. Neither I have B. Neither do I C. Me neither
—Would you mind ______ those old jeans?
—.
A. not wearing; Yes, I wouldn’t B. not to wear; No, I would
C. not wearing; Not at all
I have been ______ English _______ ten years.
A. study; for B. studying; since C. studying ; for