31. Look at the notice. You are not allowed _______ the gymnasium without permission.
| A．to enter | B．enter | C．for entering | D．Entering |
The murderer was brought in ,with his hands behind his back.
| A．being tied | B．having tied | C．to be tied | D．tied |
If you _____ him yesterday, you _____ what to do now.
| A．asked … would know | B．had asked … would have known |
| C．asked him … know | D．had asked … would know |
The volleyball match will be put off if it _____.
| A．will rain | B．rains | C．rained | D．is rained |
I must remember______ John that the garden needs ____
| A．reminding; watering | B．to remind ; watering |
| C．reminding; to water | D．to remind; to water |
All is needed is a supply of oil.
| A．the thing | B．that | C．what | D．which |