_______have you been to Tianjin?---Twice.
| A．How many | B．How many times | C．How | D． How many time |
I think every one should know it will be bad for your health to eat _______ food and take _________ exercise.
| A．more, less | B．fewer, more | C．less, less | D．little, much |
Behind bad luck comes good luck. So something good happened _____ you..
| A．in | B．to | C．for | D．with |
She looks very sad. I want to help her , but I just don’t know_________ to do.
| A．what | B．when | C．how | D．where |
At last our head teacher ______ who broke the window of the classroom.
| A．looks for | B．finding | C．found | D．found out |
My mother was cooking while I_________ the radio.
| A．listened to | B．have listened to | C．was listening to | D．am listening to |