大卫是英国下议院议员,关于英国的君主立宪制,他津津乐道。你认为他的下列说法错误的是
Our Chinese teacher is nice and patient ________ she is very strict with us.
A.ifB.asC.unlessD.though
— Is this your bike,Cindy?
— Yes,it's ________.My mother bought it for me last month.
A.hersB.hisC.yoursD.mine
Becky often plays ________ violin for an hour every day.
A.aB.anC.theD./
—Lisa,could you help me buy some ________ on your way home?
—OK,mom.
A.eggB.beefC.bananaD.potato
All the students in Grade Three are going to ________ the banks of the Xiangjiang River.( )
A.turn upB.give upC.clean up