I saw him in the library yesterday. He ________ a book at that moment.

On her way home Lucy saw a thief ____ in a shop. Shestopped ____ 110 at once.

Some members went so wild that they strongly demanded to know why they had been kept____ the true facts until the present stage

Nanjing,______ capital of Jiangsu, is abeautiful city with____ long history.

Excuse me, can I take a seat here—. Thewoman who sat here will be back soon.