写出5中常见的正手发球技术、、、、。(答案格式:正手**)
I ______thank you too much for all your help to my son while we were away from home.
A. won't
B. can't
C. can
D. will
I don't really like James. Why did you invite him?-Don't worry. He_______ come. He said he wasn’t certain what his plans were.
A. must not
B. need not c. would not might not
C. would not
D. might not
They______ have arrived at lunchtime but their flight was delayed.
A. will
B. can
C. must
D. should