—I got a text message saying my phone number won a prize worth $5 000.
—Too good to be true. Don't ________ it.
| A．make | B．do |
| C．hold | D．buy |
The person we spoke to ____ no answer at first．
| A．making | B．makes | C．make | D．made |
The person we talked about ____ our school last week．
| A．visiting | B．will visit | C．visited | D．has visited |
Before he went abroad，he spent as much time as he _____ English.
| A．could learning | B．learned | C．to learn | D．could learn |
______ is it _____ has made Peter _____ he is today?
| A．What; that; that | B．That; that; what | C．What; what; that | D．What; that; what |
If _____ carefully, the experiment will be successful.
| A．do | B．does | C．done | D．doing |