Theis is one of the most interesting questions that ____ asked.
| A．have | B．has | C．have been | D．has been |
Fitness is important in sport, but of at least _____ importance are skills．
| A．fair | B．reasonable | C．equal | D．proper |
It's usually warm in my hometown in March, but it ___ be rather cold sometimes．
| A．must | B．can | C．should | D．would |
I have _____ all my papers but I still can't find my notes．
| A．looked through | B．looked for | C．looked after | D．looked out |
—Now that you like computers very much, isn't that a good idea to get a ____?
—Well, I'd like to, but I can't afford such an expensive computer at present.
| A．one | B．them | C．it | D．that |
I have many friends, ____ some are businessmen．
| A．of them | B．from which | C．of who | D．of whom |