—You___________ stop me.
—Even if you __________it, I won't allow you to swim across the river.
| A．mustn’t; dare not do | B．may; dare not do |
| C．can; dare to do | D．needn't; dare do |
Do you know that I have trouble __________ the work?
| A．to do | B．doing | C．do | D．done |
Mr. White ______ from heart trouble, and he takes some medicine with him.
| A．suffered | B．has suffered |
| C．was suffering | D．has been suffered |
______ the bikes are too old to ride. I’ll have got to get them ______.
| A．Both; repaired | B．Neither; repaired |
| C．Either; to repaired | D．All; to repair |
—______ Emily is in such a hurry?
—I don’t know. She might run to catch the bus.
| A．Do you think why | B．Why you think |
| C．Why not think | D．Why do you think |
Half an hour has been made full ______ of _____ the problem.
| A．using; studying | B．use; to study |
| C．to use; to study | D．use; studying |