-I heard Charlotte had been drowned in the lake.
-Really ！ Her boat turned __________，and __________ she couldn't swim.
| A．down; fortunately | B．up; unfortunate |
| C．over; unfortunately | D．down; unfortunately |
It is well known to us all that a lot of rivers _______by factories.
| A．are polluting | B．have been polluting |
| C．are being polluting | D．are being polluted |
I feel ____to have been invited to give a speech here.
| A．honour | B．great honour | C．honoured | D．honouring |
It was along the Mississippi Rever ____Mark Twain spent much of his childhood.
| A．how | B．which | C．that | D．where |
--Why did the police ______________the crowd?
---Because the president’s car __________in the street.
| A．break down; broke down | B．break up; broke up |
| C．break down; broke up | D．break up; broke down |
___________ made the school proud was ___________ more than 90% of the students had
been admitted to universities.
| A．What; because | B．What; that | C．That; what | D．That; because |