Tom is _______ learning English. To learn it well, he abandons all his hobbies.
–Did you _____ your sister when you were in Shanghai? --No. But I _____ my uncle’s during my stay there.
–How does his explanation _____ to you? --Well, quite reasonable and acceptable.
The little girl cried _____ she saw the dog.
On Christmas Day people walk about in the street _____ their best.
When a person wants to operate the computer, _____ read instructions first.