Excuse me, but it is necessary that your temperature ____.

A. of seeing B. for seeing C. to see D. to seeing

A. may be working B. may have worked C. might be working D. had to work

A. had better B. had rather C. will have to D. would rather to

A. spoken B. to speak C. speak D. speaking

A. to do B. do C. that I do D. doing

A. are helping B. helped C. helping D. helps

A. believe B. to believe

C. believing D. believed

A. put B. putting

C. to put D. puts

A. teach B. teaching C. taught D. to teach