Mary____ a math problem with her classmates when the math teacher knocked at the classroom door.( )
has discussed
was discussed
was discussing
discusses
There's ______ in the city.Why not have a picnic in the countryside?
Great! Daweishan Mountain might be a good choice.( )
A.interesting something
B.nothing interesting
C.anything interesting
______ April 22nd,people around the world celebrate Earth Day in different ways.( )
A.InB.AtC.On
Hello,John.This is Mike.What are you doing now?
I'm watching a football match.It started at 7:30 p.m.and ______ on for another one hour.( )
A.has beenB.wasC.will be
Boys and girls! I hope you can get good grades in this exam.
______, Miss Lu!( )
A.Thank youB.You are OKC.Good idea
Do you like Jay Zhou?
Yes. I like singers ______ sing pop songs.( )
A.whichB.whenC.who