） ––________must I take the medicine, doctor? –– Every six hours.
| A．How | B．How long |
| C．How often | D．When |
If you like this sweater, you’d better_______.
| A．try on it | B．try it on | C．to try on | D．to try it on |
You should move back and forth while _______ basketball.
| A．to play | B．playing | C．are playing | D．plays |
________________ to improve our English?
| A．What do you think we should do |
| B．Do you think what do we should |
| C．What do you think should we do |
| D．Do you think what should we do |
--- What do you think of the young boy?
--- He is good ___________ me. He is good ________ English, and he often tells me listening to English songs is good __________ learning it well.
| A．for; at; to | B．to; in; of | C．at; for; to | D．to; at; for |
--- John likes walking in the open air.
---__________.
| A．So Tom does | B．So does Tom | C．Also does Tom | D．Tom likes also |