Some researchers believe that there is no doubt _____ a cure for AIDS will be found.
| A．which | B．that | C．what | D．whether |
At last he chanced to sail back towards the place _____ he had started.
| A．with which | B．for which | C．from which | D．on which |
My brother got fired a month ago, but he landed on his feet and found another job that paid ____ money.
| A．twice as much | B．as much twice | C．twice much as | D．as twice much |
I didn’t get into the two-hour quarrel; I know how it ______, though.
| A．would break out | B．has broken out | C．was breaking out | D．had broken out |
It is no doubt that once ____ this city, you’ll find that there is so much surprise waiting for you to discover.
| A．visit | B．visiting | C．visited | D．to visit |
_____ U2, the Irish rock band from Dublin perform a concert in Beijing, tell me in advance.
| A．If | B．Shall | C．Should | D．Would |