We can’t go swimming ________ our parents are with us.
| A． |
if |
B． |
when |
C． |
unless |
--Mom, these are my friend Peter and __ brother Bill.
--Welcome to our home. Come in, please.
| A．my | B．your | C．his | D．her |
Anna is not my sister. __ my cousin.
| A．He | B．He's | C．She | D．She's |
Lin Hai and Dave __ his good friends.
| A．are | B．be | C．am | D．is |
Are Kate's ?
| A．this; book | B．that; book | C．these; books | D．those; book |
Is that your __?
| A．a picture | B．picture | C．pictures | D．nice pictures |