—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
The children went home from the grammar school，their lessons ________ for the day.
A．finishing B．finished
C．had finished D．were finished
The country has already sent up three unmanned spacecraft，the most recent ________ at the end of last March.
A．has been launched B．having been launched
C．being launched D．to be launched
________ the program，they have to stay there for another two weeks.
A．Not completing B．Not completed
C．Not having completed D．Having not completed
The news of ________ greatly made us surprised a lot as he was indeed very excellent.
A．not his having elected B．not his being elected
C．his not being elected D．his not having elected
—They are quiet，aren't they?
—Yes.They are accustomed ________ at meals.
A．to talk B．to not talk
C．to talking D．to not talking
