My aunt wanted to take a taxi so that she ________ get to the airport on time.
句意：我姑姑想要乘坐出租车，以便能准时赶到机场。
考查情态动词。can能；could能；must必须；would将会；分析句子可知，这是一个由 so that引导的目的状语从句。由“wanted”可知，主句时态为一般过去时，从句时态也使用一般过去时。再由“My aunt wanted totake a taxi”可知是为了能准时到达，用could。故选B。
My aunt wanted to take a taxi so that she ________ get to the airport on time.
He ______ sleep,although he tried to. One cup of coffee in the late afternoon caused him tostay awake almost all night.
—What a lovely present!Who sent it? __________it be your brother?
—It __________be my brother. He doesn't know today is my birthday.
—Excuse me, are the glasses Mike’s?
—No, they __________be Mike’s. He doesn’t wear glasses.
— Is that man your friend Tom?
—That man ________ be him,because he has gone to Canada.
—Sam, ________ I join you in the community service?
—Of course you can.
________you smell something burning? Go and see what's happening.
下面四个交通标志图是轴对称图形的是（ ）
