May I join the art club， Dad？
If you have interest， you ________．（ ）
A．shouldB．canC．have toD．must
We should keep quiet in the cinema．We speak loudly．（ ）
A．canB．mustC．needn'tD．mustn't
These oranges look nice，but very sour．（ ）
A．feelB．tasteC．soundD．look
do you go to a movie？
Twice a week．（ ）
A．How longB．How soonC．How oftenD．How far
Teenagers have to be 18 years old before they to drive a car．（ ）
A．are allowedB．will be allowed
C．allow
we work at English，the better grades we will get．（ ）
A．HarderB．The hardest
C．HardestD．The harder