— Why are the Woods selling their belongings?
— They to another city.
| A．had moved | B．have moved | C．moved | D．are moving |
We have made good preparations for Sarah’s birthday, but if she ________ late to the party, it would ruin the surprise for her.
| A．comes | B．would come | C．had come | D．were to come |
Technology has quickened the rate _________ we communicate with the world around us.
| A．for which | B．at which | C．to which | D．with which |
Some people think it __________ privilege to study abroad, but it doesn’t make _________ sense if you go when you even cannot look after yourself.
| A．a; 不填 | B．a; the | C．the; 不填 | D．the; a |
--- I once got lost during my first visit to Beijing.
-- Oh, did you? You _______ me as your guide.
| A．might have asked | B．could ask | C．would have asked | D．would ask |
How long do you think it will be _______ scientists succeed in providing a cure for cancer?
| A．when | B．after | C．since | D．before |