Stop ______ about the traffic. Just think about what we can do to improve it.
It’s necessary _____ us _____blind people cross the street.[ ]
Have you found your English book?—No, I haven’t found ________, but I borrowed ________ from Jack this afternoon.
The girl was born __________ the morning of May 1, 1991.[ ]
Five _______ students from different schools took part in the English contest last Saturday.