Our bad living habits will destroy the earth．Only by changing ______ we live can we save the earth．
| A．that | B．what | C．how | D．where |
One of the first things Joan did ____ getting home was to water her flowers．
| A．by | B．on | C．at | D．for |
Kids should be encouraged to get involved in activities ___ they meet other kids．
| A．that | B．what | C．which | D．where． |
After working abroad for several years．Gill wants to settle down to a ____job in Britain．
| A．normal | B．constant | C．permanent | D．primary |
In 1519 ____ traveler who went to American from Europe discovered ____tomato．
| A．the; the | B．the ; a | C．a:．a | D．a; the |
—Excuse me , you left this handbag in the shop．
| A．It's my fault． | B．Oh, thank you． |
| C．I'm sorry． | D．It's mine! |