The USA has a quarter of the leading 200 in the latest ranking of the world universities, _________ 30 of the universities are in the UK．
| A．when | B．while | C．where | D．why |
In such dry weather, the flowers will have to be watered if they ________.
| A．have survived | B．are to survive | C．would survive | D．will survive |
When I got home, I found the door open, a terrible thought ______ me—had any one broken into the house?
| A．beat | B．knocked | C．struck | D．appeared |
While shopping, people sometimes can’t help _______ into baying something they don’t really need.
| A．to persuade | B．persuading | C．being persuaded | D．be persuaded |
－Did you receive any news during Jamie’s long _________?
－Never.
| A．absence | B．confidena | C．distance | D．renaissance |
Wendy hurried to the airport, only ______ the pop singer had left.
| A．told | B．telling | C．to tell | D．to be told |