(届北京石景山区高考一模英语试卷)I’m sorry you’ve been waiting so long,but it’ll still be some time_____Tom gets back.
I first met Lisa three years ago. She _____ at a shop at the time.
He studies the subject _____.
Charles Babbage is generally considered ______ the first computer.
"Can’t you read?" Mary said ______ to the notice.
Look, they seem _____ about you.