—Shanghai is really a beautiful city and there are many places of interest.
—So it is. Why not _______ here for a long time?
A. stay       B to stay    C. staying    D. stays

It’s bad for our eyes _____in bed.

He spent one day ________with his friends.

These days  my classmates are busy ____ ready for the graduation exam.

When I returned .I saw him ____ on the bed.

Has he ever been heard __about his trip to the lonely island?

We had no time_________, but we had a great time _________the model plane together．

Scientists can make the robots __________.

He found it difficult _____ others with English
A help              B helping              C helped               D to help

I often help my mother _______ clothes.