The child has come to school by bike _____ his own.
| A．in | B．by | C．on | D．of |
The weather of Wuhan in summer is hotter than______ in Tianjin.
A. one B. that C. it
_______ students in China are learning English at school.
A. Thousand of B. Thousands of C. Many thousand
Mr. Smith is ______old _____ anything. He has to ask others to look after him.
A. too; not to do B. too; to do C. so; not to do
---Playing computer games too long is bad for our eyes.
---I ________ you.
A. agree on B. agree to C. agree with
What was he doing ______ his father _______ back?
A. while; came B. when; came C. when; was coming