It is usually not quite cold in this area in March, but sometimes the temperature ______be very low.
| A．can | B．should | C．must | D．shall |
She owes her success________good luck more than ________ability.
| A．to；and | B．of；to | C．to；to | D．to；in |
He was in poor health，so the doctor________him to drink wine.
| A．hoped | B．demanded | C．forbade | D．prevented |
—You see，I’m poor in maths，you are not good at English，and...
—That’s________we should help each other.
| A．when | B．where | C．how | D．what |
______I am concerned，the price of the computer is much too high，so I can’t afford it.
| A．As long as | B．As far as | C．As well as | D．As often as |
Teachers recommend parents_____their children under 12 to ride bicycles to school for safety.
| A．not allow | B．do not allow |
| C．mustn’t allow | D．couldn’t allow |