Nobody but you _____ able to sing that American song.
| A．are | B．were | C．is | D．can be |
He is only too ready to help others, seldom____, refusing them when they turn to him. 
| A．if never | B．if ever | C．if not | D．if any |
Many people have been ill from a strange disease these days, _____ we’ve never heard of before.
| A．it | B．that | C．one | D．this |
There was such a long queue for fried chicken at KFC that we_____ gave up.
| A．eventually | B．unfortunately | C．generously | D．purposely |
_________, I guess, and you can make it.
| A．If you make more efforts | B．Making more efforts |
| C．A bit more efforts | D．To have made more efforts |
—Did you watch the movie Mei Lanfang in the People’s Theatre last night?
— I had planned to, but it ________ hard all the time.
| A．is raining | B．was raining | C．has rained | D．had rained |