I remembered________ the door before I left the office but forgot to turn off the lights.

The traffic rule says that the children ______less than 40 pounds and under the age of four must be in a child safety seat.

What depressed her was that although she kept waving her hand, nobody seemed _______ her new watch.

About 60 percent of the students ________ from the south,the rest of them ________ from the north and foreign countries.

There are hundreds of students      in front of the school gate to welcome the scientist from America.