Since I know ______ , I understand why they needed so much money.
| A．what a hard life they led | B．they led what a hard life |
| C．what they led a hard life | D．how hard a life did they lead |
I feel a bit nervous since this is the first time that I _______ to give a lecture to so large an audience till now.
| A．am invited | B．have invited |
| C．have been invited | D．will be invited |
The exam result will be _______ on Friday afternoon.
| A．put up | B．put away |
| C．put off | D．put on |
Mr. Smith left home and went to Shenzhen in his twenties, where he _______ until the 1990s.
| A．stayed | B．had stayed |
| C．has stayed | D．were staying |
. After a heated discussion, the committee finally worked out one _______ to solve the problem.
| A．approach | B．means | C．method | D．way |
The number of foreign students attending Chinese universities ______ rising step by step since 1999.
| A．is | B．are | C．has been | D．have been |