He tried his best to solve the problem, _______difficult it was.
| A．no matter | B．no matter how | C．whatever | D．although |
Mother’s love is true love! She’s never stopped loving you you become or you do．
| A．whichever | B．however | C．whatever | D．whoever |
I’m afraid we’ll have to work extra hours, for there are still some problems ．
| A．remaining to settle | B．remaining to be settled |
| C．remained to talk about | D．to remain to discuss |
I have been living in Haikou for 10 years, but seldom so lonely as now．
| A．have I felt | B．I have felt | C．had I felt | D．I had felt |
We have every reason to believe that 2010 World Expo in Shanghai will be
success．
| A．/; a | B．the; / | C．the; a | D．a; a |
This time next week, we _______ a meeting in Beijing.
| A．will have | B．are going to have | C．will be having | D．are having |