11. It is because people are likely to stay indoors ______ the virus can spread easily ______ people often catch colds.
|
A．and, that |
B．so, that |
C．therefore, so |
D．that, that |
10. By the middle of the 21st century , the vast majority of the world’s population ________ in cities rather than in the country.
|
A．are living |
B．will be living |
C．have lived |
D．will have lived |
7. When you read the book, you’d better make a mark ______ you have questions.
|
A．at which |
B．at where |
C．the place where |
D．Where |
6. _________, I attended the meeting instead of him last week.
|
A．He was ill |
B．His being ill |
C．He being ill |
D．Him being ill |
5. The day breaks, _______ the birds are singing.
|
A．for |
B．because |
C．since |
D．As soon as |
4. It used to ______ that humans and animals were different and had little in common.
|
A．believing |
B．be believed |
C．believe |
D．Believed |
