They develop their skills _________ they can do things better and better.
A. however B. because C. since D. so that
He was late this morning, because the bus was too ________ for him to get on.
A. quiet B. tidy C. crowded D. noisy
—Which is the biggest number of the four?
— ．
A．One-third B．Two-thirds C．A half D．A quarter
What did Mr．Smith do before he came to China?
—He in a car factory．
A．worked B．works C．is working D．will work
—Hello! May I speak to Lucy，please?
—Sorry，I’m afraid you have the wrong ．
A．way B．name C．number D．telephone
—Mike，is this Tom’s pencil?
—Oh，yes，it is ！
A．mine B．hers C．yours D．his
