____ matters most in learning English is enough practice.
| A．What | B．Why | C．Where | D．Which |
This test ____ a number of multiple-choice questions.
| A．makes up | B．consist of | C．makes up of | D．consists of |
He soon made _____ clear why he had asked for a conference.
| A．that | B．it | C．this | D．one |
There is no doubt _____ he will finish the task in time.
| A．while | B．why | C．if | D．that |
My brother is honest. He _____ such a thing.
| A．might not do | B．can’t have done | C．can do | D．mustn’t have done |
—Which of the two books will you buy?
— I’ll buy _____ of them, because I’m not interested in them.
| A．one | B．either | C．none | D．neither |