---May I go out to play with my friends now, Dad?
---No. You ______ let your mother know first.
A. may B. need C. must
—He goes back to our school to visit his teachers every year.
—____________.
| A．So do we | B．So we do | C．We do so | D．Do so we |
The boy is ________ to look after his sister.
| A．enough old | B．enough young |
| C．young enough | D．old enough |
Lin Shuhao is a famous basketball star_______ is playing in the NBA .
A whichB who C when D where
This pair of shoes ______ Li Gang’s ,It’s too big for him .
| A．can’t be | B．could be | C．might be | D．must be |
I would rather _____ books than ______ shopping.
| A．reading ; go | B．read ; going |
| C．read; go | D．reading; going |