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—Hi, Susan, where were you at lunch time？I ________ a seat for you in the coffee shop.

—Oh, sorry to miss you.My political science class ran longer than usual.

A．am saving B．was saving

C．had saved D．have saved

In order to find the missing child，villagers ________ all they can over the past five hours.(2012·安徽)

A．did B．do

C．had done D．have been doing

Tom ________ in the library every night over the last three months.(2011·北京)

A．works B．worked

C．has been working D．had been working

—Why，Jack，you look so tired!

—Well，I ________ the house and I must finish the work tomorrow.

A．was painting B．will be painting

C．have painted D．have been painting

I have to see the doctor because I ________ a lot lately.

A．have been coughing B．had coughed

C．coughed D．cough

I feel so excited！At this time tomorrow morning I ________ to Shanghai.(2012·遼寧)

A．will be flying B．will fly

C．have been flying D．have flown

If you plant watermelon seeds in the spring，you ________ fresh watermelon in the fall.(2010·浙江)

A．eat B．would eat

C．have eaten D．will be eating

—Guess what，we've got our visas for a short－term visit to the UK this summer.

—How nice！You ________ a different culture then.

A．will be experiencing B．have experienced

C．have been experiencing D．will have experienced

Daniel's family ________ their holiday in Huangshan this time next week.

A．are enjoying B．are to enjoy

C．will enjoy D．will be enjoying

—Look！Somebody ________ the sofa.

—Well，it wasn't me.I didn't do it.(2012·江西)

A．is cleaning B．was cleaning

C．has cleaned D．had cleaned