I doubt ____________all the people invited will come to attend the ceremony in such bad weather.
| A．whether | B．that | C．how | D．what |
Who was ______ spoke first at the meeting?
| A．that it | B．it that | C．it what | D．what it |
It was quite a long time ______ he really realized the serious situation.
| A．since | B．when | C．after | D．before |
Everybody in the village likes Jack because he is good at telling and ______ jokes.
| A．turning up | B．putting up | C．making up | D．showing up |
. ______ in the regulations that you should not tell other people the password of your e-mail account.
| A．What is required | B．What requires | C．It is required | D．It requires |
To his surprise, the lifestyle he was used to ______ greatly in the past few years.
| A．change | B．changing | C．changed | D．has changed |