Nobody knows if he ．If he here，I'll call you at once．（ ）
| A． |
will come；will arrive |
| B． |
will come；arrives |
| C． |
comes；will arrive |
| D． |
comes；arrives |
﹣﹣﹣Judy，could you tell me_______the schoolbag？
﹣﹣﹣Oh，yes．I bought it in a store on the Internet．（ ）
A．where did you buyB．where will you buy
C．where you boughtD．where you will buy
The mobile phone in 1973．（ ）
A．inventsB．is invented
C．inventedD．was invented
Lily is my classmate．We each other since she came to our school．（ ）
A．knowB．knewC．have knownD．will know
My mother some washing when the telephone rang．（ ）
A．doesB．didC．is doingD．was doing
﹣﹣﹣How do you usually go to school？
﹣﹣﹣I to school on foot．（ ）
A．goB．wentC．was goingD．will go