Half of the workers here ________ under 30 ________.
| A．is;years | B．are;year old | C．is;years old | D．are;years of age |
How long ___ to finish the work ?
| A．will you take | B．will you take | C．you will take | D．will it take you |
___ no need for us to discuss the problem again. It has already been settled.
| A．It has | B．There has | C．It is | D．There is |
He didn't tell us the truth ___ elevent o’clock last night.
| A．until | B．unless | C．since | D．for |
One day a young man named Herry ___ a taolor’s shop to buy a new coat.
| A．called on | B．called at | C．called for | D．called up |
--Beg your pardon, please.I didn't quite catch what you said.---Oh, I ___ to myself.
| A．had talked | B．talking | C．talked | D．was talking |