So far, all of the infected people are thought _______ the flu after direct contact with sick birds.
| A．to have caught | B．having caught | C．to catch | D．being caught |
His mother likes to have him next to her ________ she can keep an eye on him.
| A．where | B．in which | C．there | D．when |
—You should have thanked the hostess before leaving.
—I meant ________.But I couldn't find her when I was leaving.
| A．to do | B．to | C．doing | D．doing so |
________ change your mind, do let me know.
| A．If should you | B．Should if you |
| C．Should you | D．You should |
In ________ most countries, a university degree can give you ________ flying start in life.
| A．the; a | B．the; 不填 |
| C．不填；不填 | D．不填；a |
It just isn't fair ________ I was working as a cleaner last month; my friends were on a visit to Dalian.( 2012·湖北八校联考)
| A．whenever | B．though |
| C．for | D．while |