—______ are you going to Beijing this summer holiday? —By plane.
J—I don’t know________next.—You’d better finish your homework first.A.what to doB.how to doC.when to do
I find________difficult to finish the work on time.We only have three hours left.
Young people today________posting wonderful articles and beautiful photos onto the micromessage(微信)to share with friends.A.are afraid ofB.are used toC.are worried about
Lucy and I are twins,but we’re different________each other in many ways.
The workers were made________day and night.