During the period of recent terrorist activities, people _____ not to touch an unattended bag．
| A．had always been warned | B．were always being warned |
| C．are always warning | D．always warned |
In some places, women earn money ________ men work at home and raise their children.
| A．and | B．when | C．while | D．though |
Though John and David are twins, yet they differ widely _______ character.
| A．to | B．from | C．in | D．at |
Great changes ________ in the village in the past two years.
| A．have taken place | B．had taken place |
| C．were taken place | D．have been taken place |
Returning from Guilin, he told me about the scenery ________ interested him there.
| A．where | B．what | C．which | D．who |
________ by a college or university in the USA Chinese students must have excellent speaking and writing abilities in English.
| A．To be accepted | B．Being accepted | C．Having been accepted | D．Accepted |