—Let’s go and play basketball after school,          ?

—Good idea!

A. will you                    B. do you                      C. shall we                    D. won’t you

Let's go and play ________basketball．

[　　]

Let's go and play ________basketball．

[　　]

—Sam, let's go and play basketball.

—Not now. I 　　　　Dick with his English.

　　 A. help　　　　　　 B. helped　　　　　 C. am helping　　 D. have helped