—How long have you been going to work on foot?

—Since last month when I ________ from a heart attack.

A．recovered B．have recovered

C．was recovering D．would recover

I can't understand why he ________ so selfish. He isn't usually like that.

A．was B．had been

C．is D．is being

This is a promising company as its employees ________ to think outside the box and develop creative solutions.

A．encourage B．have encouraged

C．were encouraged D．are encouraged

Up to now, thousands of red phone boxes, the old image of Britain, ________ due to mobile phones.

A．removed B．have removed

C．were removed D．have been removed

When I ________ home, I caught a thief stealing from a passer?by.

A．headed B．was heading

C．has headed D．had headed

—How long on earth shall I have to wait?

—Sorry, sir. Just a minute. There ________ a table available.

A．is B．was

C．will be D．has been

—Sorry, sir. And you'll let me pay to have your jacket cleaned, won't you?

—That's all right. Coffee ________ lasting marks on clothing, I'm sure.

A．didn't leave B．doesn't leave

C．hasn't left D．hadn't left

—Lucy, tell me about your trip to the beach.

—Awful! There ________ too many holidaymakers.

A．had been B．were

C．would be D．have been

—How is your cousin, Kate?

—She broke her leg and ________ medical treatment since.

A．is receiving B．has received

C．received D．has been receiving

I had wanted to help you last night but I couldn't spare any time, for I ________ a composition which I have to hand in this morning.

A．wrote B．was writing

C．had written D．have written