The children went home from the grammar school，their lessons ________ for the day.

A．finishing B．finished

C．had finished D．were finished

—Come on，please give me some ideas about the project.

—Sorry.With so much work ________ my mind，I almost break down.

A．filled B．filling C．to fill D．being filled

John received an invitation to dinner，and with his work ________，he gladly accepted it.

A．finished B．finishing

C．having finished D．was finished

________ as the “first lady of speech”，Dr, Lillian Glass is recognized as one of the world's leading experts on communication skills.

A．Knowing B．Having known

C．Known D．To be known

—Why do you look sad?

—There are so many problems ________.

A．remaining to settle B．remained settling

C．remaining to be settled D．remained to be settled

A few days after the interview，I recevied a letter ________ me admission to the university.

A．offering B．offered

C．having offered D．to be offered

—We didn't find the Blacks ________ the lecture.

—No one had told him about ________ a lecture the following day.

A．to attend；there to be B．attending；there being

C．attended；there be D．attend；there was

Only ________ according to the directions can the medicine be quite effective.

A．taking B．taken

C．being taken D．having been taken

The man we followed suddenly stopped and looked as if ________ whether he was going in the right direction.

A．seeing B．having seen

C．to see D．to have seen

—Hi，Mary.Would you like to go to the concert this evening?

—Sorry，Tom.________ tomorrow's lessons，I have no time to go out with you.

A．Not preparing B．Not having prepared

C．Not to prepare D．Being not prepared