Some exercises appear to be ______ ones you have done, but on ______ second thoughts, you’ll find that they’re different.
| A．/; the | B．the; / | C．the; a | D．/; / |
John talked with me for about an hour yesterday. Never _______ him talk so much.
| A．had I heard | B．did I hear | C．I had heard | D．I heard |
Mother told Jim to ______ the milk until it boiled and then turn off the gas.
| A．observe | B．watch | C．notice | D．glance at |
Some friends tried to settle the quarrel between Mr. and Mrs. Smith without hurting the feeling of _____, but failed.
| A．none | B．either | C．all | D．neither |
in the regulations that you should not tell other people the password of your e-mail account.
| A．It requires | B．It is required | C．What requires | D．What is required |
In some places women are expected to earn money men work at home and raise their children.
| A．because | B．but | C．though | D．while |