根据句意，用括号里所给单词的适当形式填空。—Every year thousands and thousands of ________(tour) from all over the world come to visit Beijing.
—Right. Beijing is really a beautiful city.—Dad, I need a ________(record) to help me learn English. Could you buy one for me?
—Oh, let me see.After ten years’ hard work, Mr. Wang now has no difficulty (communicate) with English speakers.
—Would you mind giving me some advice on how to improve my ________(pronounce)?
—Certainly not.It’s important for us students to master some ________(base) computer skills.