——My diamond necklace has gone missing． It’s my favourite present from my mother．
——_________．
| A．Never mind | B．No problem |
| C．That’s OK． | D．I’m sorry to hear that |
—To make sure the food we eat every day is safe, the government is doing something useful .
— ___________
A. That’s not true.
B. That’s all right.
C. That’s great.
—Bill, look at your bedroom, _______
—Sorry, mom. I’ll clean it right away.
A. Bad luck!
B. What a pity!
C. What a mess!
—There are four pens on the desk.
—But of them works.
A. each B. none C. all
—How do you know the Maglev train?
—It’s well-known. And it can reach a _______ of over 400 km per hour.
A.project B. guide C. speed
—We must take a taxi, we’ll be late for the meeting.
—Don’t worry. We still have a little time left.
A. or B. and C. so