Let's divide the rubbish into different kinds before throwing it away．
OK． It's _____us to use some of it again．（ ）
A．thankful toB．good for
C．similar toD．painful for
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
His mother won't be there，________ his father might．（ ）
A．andB．butC．or