His grandfather ________ for seven years.
I really found it difficult to read, for his eyesight was beginning to________.
----What are you busy doing these days?----I______ study for the coming exam.
----You needn’t take an umbrella. It isn’t going to rain.----Well, I don’t know. It_____do.
I don’t believe him, we_______before. But I have to say you do look so familiar.
More and more people like shopping online. They mostly receive what we buy by_______.