We laugh at jokes，but seldomabout how they work．
| A． | we think | B． | think we | C． | we do think | D． | do we think |
Helen has had a lot of trouble these days,but she doesn’t know whom to ______ for help.
| A．turn to | B．look for | C．deal with | D．talk about |
I have been teaching for over twenty years, but never _____ a girl as bright as Lily.
| A．I have met | B．I had met | C．have I met | D．had I met |
I _____thank you too much for all your help to my son while we were away from home.
| A．won’t | B．can’t | C．can | D．will |
It is the third time that she has won the race,______ has surprised us all.
| A．that | B．where | C．what | D．which |
The man decided to help the girl,_______parents had die, to finish school.
| A．who | B．whose | C．that | D．whom |