16．Julia _____ with a stranger when Jim went to the jacket he _____ in the restaurant．
| A．had quarreled; left | B．had quarreled; had left |
| C．was quarreling; has left | D．was quarreling; had left |
Nowadays, _______ cars are more and more popular.
| A．electronic | B．electric | C．electrical | D．electricity |
I don’t know why he ________ in the middle of a sentence.
| A．broke off | B．broke out | C．broke down | D．broke up |
College graduates are offered lots of available jobs, ______, I believe, they can fully demonstrate their knowledge and competence.
| A．where | B．which | C．that | D．what |
Scientists also have no idea how long it will be before all wild animals in the cages _____.
| A．should be set free | B．will be set free | C．are set free | D．would be set free |
--- _____ peasant-worker wants to meet you. Shall he come over?
---- Oh, you mean the one with a bag in _____ hand?
| A．A；the | B．A ；不填 | C．The ；the | D．不填; the |