—The cars give off a great deal of waste gas in the street.—Yes, But I’m sure something will be done to air pollution.
Many students listened to the lecture, but I wondered how much they ______.
----- Why are they taking all the equipment away ? ------____________ , they are packing up to leave.
It is _____that he has been addicted to the drugs and has difficulty quitting it.
George Washington was born in 1732 in a rich family in _______ is now the state of Virginia.
_____ do you think will teach us math next term?