Meeting again by chance, Lucy and Amy are delighted to the friendship where it left out years ago.
| A．break up | B．pick up | C．bring up | D．build up |
It is good manners to eat up _______is left in your plate.
| A．that | B．what | C．which | D．all |
Can you explain ________ the sun goes down in the west?
| A．why is it that | B．why it is that | C．how it is that | D．how is it that |
A huge amount of oil was spilt on the East Sea, the causes of ______ are still under investigation.
| A．it | B．that | C．which | D．whom |
--- Has James finished his report on his Enquiry Learning yet?\
---- I’m not sure. He _____ on it last week.
| A．was working | B．has worked | C．worked | D．had worked |
If you are traveling_ the customs are really foreign to your own，please do as the Romans do.