Do you know ____ ？（ ）
| A． |
how old is he |
| B． |
how old he is |
| C． |
he is how old |
Don't be upset.Sometimes challenges can ___________ the best in us.（ ）
A．bring outB．work outC．hand outD．hang out
—Do you often go to Jingyue Park，by car or by bike？
—______________.I think it's good for the environment and our health.（ ）
A．Yes，I doB．No，I don'tC．By bikeD．By car
Hi，Mom is __________than any other film that I've ever seen.（ ）
A．popularB．the most popular
C．too popularD．more popular
Write down these useful sentences，___________you'll forget them.（ ）
A．andB．orC．butD．so
Bill is running so fast!I _________believe my eyes.（ ）
A．needn'tB．shouldn'tC．mustn'tD．can't