Don’t handle the vase as if it ____ made of steel.
| A．is | B．were | C．has been | D．had been |
There are ______ to show that a new , different city is coming out of its dark past ．
| A．signals | B．marks | C．signs | D．symbols |
------ Can I pay the bill by check ?
------ Sorry, sir．But it is the management rules of our hotel that payment _______ be made in cash．
| A．shall | B．can | C．will | D．may |
In order to continue to learn by ourselves after leaving school, we must ______ learn how to study in the school now ．
| A．after all | B．in all | C．above all | D．first of all |
The job is great in terms of salary ．It has its disadvantages, _______ ．
| A．though | B．however | C．even | D．therefore |
______ it is hoped that college students should be equipped with the ability to take a good set of notes, this is not always the case．
| A．When | B．While | C．As | D．Unless |