Can再问个問題You( ) work hard.arehave. must. will. may. could. can. 选一个填must意思你必须努力工作1．John( ) go and see his grandparents next week.从上面的单词选一個will意思john将会在下个星期去看他的祖父母（ ）you give me a glass of water?could( ) you got any books or pencils?could每詞用一次cancould用了2次can用了2次have