In the USA people ___ bikes must wear helmets.A. on B. go C. at
What is ________ doing? A. she B. her C. your
I’m working ____ my computer. A. in B. at C. on
Dad, ______ is a call for you. A. haveB. there’s C. there
Mom is ______ a letter. A. writing B. write C. writeing
I am talking ____ you. A. forB. to C. on