I......... do it if I could, but I am already busy with something else.

Dave sold his car ....................... he moved to a new city.

Anna's family is very worried about her ............... she hasn't called them since she left to study abroad.

Emma couldn't ----------- her paper last night. She was too tired.

Jack drove a Ford for years before he ...................... a GMC.

Tom and Adam developed a new app all by …………………