With 5G network， driverless cars will run than before．（ ）
| A． |
safe |
B． |
safer |
| C． |
safely |
D． |
more safely |
I can't believe it．Tony has invented a tree﹣planting machine．
Really？He is so（ ）
A．shyB．rudeC．creativeD．friendly
Jenny has a sweet tooth．Let's make some cookies for（ ）
A．meB．himC．herD．them
Do you know when ________ today？（ ）
A．is the bookstore closed
B．does the bookstore close
C．the bookstore closes
Don't enter the area．The students _______ an English exam．（ ）
A．takesB．are takingC．have taken
_______ she's wrong,it's not a big deal．（ ）
A．AlthoughB．BecauseC．If