What ____________ we do to protect our environment?A. doB. shouldn'tC. can
I likeshoes. A. this B. their C. these
You areyounggo. A. to…to B. too…to C. too…for
My aunt’s son is my. A. brother B. sister C. cousin
I’mthen my mother. A. younger B. young C. older
May Ithan my mother. A. help B. helping C. help