Do you have any problems ______ your Maths?[ ]

Look at the photo of my family. The boy ________ my father and my mother is me. [ ]

We often go home _________ 4:30 _________ the afternoon.[ ]

It’s 12 April today. Have they found any useful information about the plane’s black box?—Flight MH370? Yes, but it’s difficult to decide where the black box really is.

Which girl is your sister? —- The girl ___________is wearing dark glasses.