A beam of light will not bend round corners unless(make) to do so with the help of a reflecting device

We were busy(get) things ready for the trial production when he phoned us.

Some molecules are large enough(see) under the electronic microscope.

The floor does not look so bad when(sweep) clean.

(fail) several times, they need some encouragement.

-Where did you go last Sunday?

-We went to the beach, and we had great funvolleyball.

MH370 with 239 people(失去，丢失) contact on March 8th, 2014.

-Who knows what pandas and sheep like eating?

-I know pandas like eatingand sheep like eating grass.

She had to sell the house even though it was(违背) her own wishes.

所谓“四书”是指《孟子》、 《大学》、《中庸》和《》。