In the near future，more advances in the robot technology ________ by scientists.(2011·湖南)

John, a friend of mine, who got married only last week, spent $3,000 more than he ________ for the wedding.

—Hurry up！Alice and Sue are waiting for you at the school gate.
—Oh！I thought they ________ without me.

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

—Why，Jack，you look so tired!
—Well，I ________ the house and I must finish the work tomorrow.

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

The sky is clouding over；we can see there ________ a rainstorm.

Close the door of fear behind you，and you ________ the door of faith open before you.(2012·湖南)

We arrived at work in the morning and found that somebody ________ into the office during the night.(2011·江西)

By the time Jack returned home from England，his son ________ from college.(2011·辽宁)