We’ve always known him ________ a warm butcalm character.

At that time she ___ sit here like that for hours

We _____ more than 1,600 words since we began to learn English.

Will you tell us what you saw in the room—Sure. _______ inside were lots of strange creatures with white skin and large black eyes.

Li Na plays ________ tennis very well. She has become ____first Asianwoman to reach a Grand Slam(大满贯) final.