题目

用所给动词的适当形式填空。 1.      He __________ (take) a boat trip to Shanghai yesterday. 2.      __________ you __________ (climb) the hill tomorrow? 3.      You are so fat that you need ___________ (exercise) now. 4.      Thank you for ___________ (invite) me to your party. 5.      ---Where is Tom?   ---He __________ (sit) in the reading room. 6.      It takes me about half an hour a day ___________ (read) English. 7.      Tom, ___________(get) on the bus at once. 8.      Amy and Simon want __________ (know) where their 下列去括号的各式中①x+（-y+z）=x-y+z；②x-（-y+z）=x-y-z；③x+（-y+z）=x+y+z；④x-（-y+z）=x+y-z正确的是（　　）A．①②B．②③C．③④D．①④