—Do you like the material? —Yes, it （ ） very soft.

The kidney transplant operation was _____ complicated， so the operating team had to take special care to ensure its success.

If I had remembered （ ） the window, the thief would not have got in.

I recognized John （ ） he entered the room.

_____ more time，he’ll make a first-class tennis player sooner or later.

When I saw the expression on his face, I realized he is （ ） agreement with me.

The government cannot operate effectively （ ） it is free from such interference.

Scientists say it may be five or six years （ ） this medicine is tested on human beings.

By the end of this term, we （ ） 3000 English words in all.

We don’t doubt _____ he can do a good job， concerning his experience.

A car （ ） Jane’s cat and sped away.

I stayed up all night _____ to find a new solution to the problem.