She had a tense expression on her face, she were expecting trouble.
| A．even though | B．as though | C．even as | D．now that |
Don’t you think it is _______ bad manners to stare at foreigners in _______ curious manner?
| A．the; a | B．/; / | C．/; a | D．the; the |
______ is often the case, we have worked out the production plan.
| A．Which | B．When | C．What | D．AS |
The flu is believed _____by viruses that like to reproduce in the cells inside the human nose and throat.
| A．causing | B．being caused | C．to be caused | D．to have caused |
The flowers _________sweet in the botanic garden attract the visitors to the beauty of nature．
| A．to smell | B．smelling | C．smelt | D．to be smelt |
--You have made progress in your English study, haven’t you?
--Yes, but much ____.
A remains to doB is remained to do
C remains to be done D is remained to be done