—Do you know what to do in the lab, Mike? —Oh, sorry I don’t----just _____if I could get a ticket for the Shanghai Expo.
She made the demand that the journalists _____ at once ______ Iraq.
The teacher demanded that the exam _____ before eleven.
You promised your friend a letter; you ought to ______ days ago.
Tell me how you work out the answer, _______ you?
“ Need he go?” “ Yes, he ______.”