The Hongkong﹣Zhuhai﹣Macao Bridge（港珠澳大桥），______sea﹣crossing bridge in the world was opened on October 24，2018．（ ）
| A． |
long |
B． |
the longest |
| C． |
longer |
D． |
longest |
—At present, one of the best ways to study is working in groups.
—More chances ___________ to students to learn from each other.
| A．offer | B．are offered |
| C．have offered | D．are offering |
Many nice books______ the children on Children’s Day.
A. gave
B. were gave
C. were given to
The child without parents ________ good care of by his teachers in this special school.
| A．is taken | B．are taken |
| C．take | D．takes |
—Has David finished his project yet?
—I guess not. He on it at lunchtime. Do you want me to confirm it?
| A．is working | B．was working |
| C．has worked | D．had worked |
At this time yesterday afternoon, I____ my bike in the street.
A. rode
B. is riding
C. was riding