There are so many kinds of computers in the shop. I really don’t know ______ to choose.
—You look________.What’s up,sir?—I can’t find my ticket,but it’s time to check in.
—Excuse me,sir,smoking________in the gas station.—Oh.I’m really sorry.A.doesn’t allowB.isn’t allowedC aren’t allowed
She is a________girl with two big eyes.A.six-years-oldB.six-year-oldC.six years old
When Miss Green began to________something,the two boys stopped________and became quiet.A.speak;speakingB.talk;speakingC.say;talking
—I think teenagers should be allowed to go out with their friends in the evening.—________.It’s not safe enough.