If the horse won today，it__________thirty races in five years.
| A．would have won | B．won |
| C．must have won | D．did have won |
Don’t worry and I’ll get your car fixed ___ .
| A．at no time | B．in no time | C．at a time | D．at all times |
---- Look! Everything here is under construction.
---- Oh, has the building once ___ for exhibition been pulled down, too?
| A．having been built | B．being built | C．to be built | D．built |
Go on climbing to the top of the peak, and you will see all the____ hills.
| A．surround | B．surrounded | C．surrounding | D．being surrounded |
He will agree to do what you require____ him.
A. of B . from C for D. to
---- Tom came to work last Sunday, but no one has seen him since.
---- _____ he have had an accident?
| A．Must | B．Should | C．Might | D．Could |