The Bunsen Burner is so named because it is thought ___________ by Robert Bunsen.
| A．to be invented | B．having been invented |
| C．invented | D．to have been invented |
The woman she acted in the film is _______ the women in the 1930s.
| A．typical of | B．conventional of |
| C．impressive of | D．consistent of |
—Well, Dick, I’m sorry but I have to leave.
—_______. I hope to hear from you soon.
| A．Enjoy yourself | B．Keep in touch |
| C．Don’t be so sad | D．So am I |
—Don’t be a slave to work, Ralph! You must take it easy sometimes.
—I can’t help it._________.
| A．Easier said than done | B．Nothing is easier than fault-finding |
| C．Easy come, easy go | D．Easy does it |
—I’m afraid you missed a fantastic lecture yesterday. How come you were absent from it?
—If you _______ know, I asked for a day off and visited a relative of mine in hospital.
| A．might | B．may | C．shall | D．must |
A proposal has been put forward at a recent video conference _______ measures be taken to raise the citizens’ awareness of traffic safety.
| A．that | B．as | C．when | D．which |