“When did you leave the farm” “____ theend of last year.”

The course that Beijing University offers normally attracts 30 foreign students per year, _______ upto half will be from America.[ ]

Thefirst thing we should do is toprotect the wild animals .

Whose trousers are these Are they ______ —No， they are _____.

I’m afraid we cannot include the item you suggest, as it does not _______ the rest of the programme.[ ]