The light in his office is still on.I wonder _______.
Maybe at midnight again.( )
A.if will he stop working
B.if he will stop working
C.when will he stop working
D.when he will stop working
Would you like to go swimming with me, Tom?
Sorry, but our teachers always tell us____in the river.( )
A.don't swimB.not swimming
C.not to swimD.to not swim
High﹣speed trains, Mobile payment, Sharing bikes and Online shopping are called "four new great inventions" of modern China.
They____our daily lives more convenient.( )
A.have madeB.had made
C.have been madeD.made
The 19th National Congress of the CPC(中共十九大)_____in Beijing last year.
Our country has been into a new era(时代) since then.( )
A.heldB.was heldC.has heldD.had held
Mary, how can I get to Xianning from Wuhan next week?
You'd better take a train._____the suitable trains in the timetable.( )
A.Set upB.Look upC.Take upD.Put up
Mom,_____I play computer games this evening?
Sure, but you_____finish your homework first.( )
A.can; mustB.can; mustn't
C.may; couldD.may; can't