_________of the two boys is from America. They’re from Canada.
| A．Both | B．Either | C．Neither | D．All |
It’s kind _____you ________us with so much work.
A. of; to help B. for; help C. of; helping
Remember to _________ the TV when you leave the room.
A. turn on B. turn down C. turn off
He is tall, _____ his son is short.
A. or B. while C. and
She has _____ this car for nearly ten years.
A. buy B. bought C. had
________the workers were quite tired, _______ they still went on working.
A. Because; / B. Although; but C. Although; /