—How long in Shanghai?—Just the weekend. I've to be back for an important meeting to be held next Monday.
If you _____ smoke, please go outside because this is a non-smoking office.
––Who would you rather _____ your graduation ceremony tomorrow, your parents or friends? ––All of them.
In that school, English is compulsory for all students, but French and Russia are ____ .
––Why didn’t you come to the party? ––I had meant _____, but something unexpected happened.
We should discuss the plan _____ before we work it out.