– Is your brother playing computer games, Nick? – He ________ do that because the computer doesn’t work.A. mustn’t B. shouldn’t C. can’t
—Which sweater do you prefer, the yellow one or the pink one? —______. I like a light blue one.
I don’t know if he_________here. If he ___________tomorrow, I will tell you.
The world’s population is getting larger and larger, so scientists are trying to ______ new ways to solve the food shortage.
He finds watching movies ______because the people speak too quickly.
E-mail is very popular today. People hardly post letters, _________?