Betty ___________ hard since last term.That's why her exam results are so good!( )
A.has workedB.will work
C.workedD.was working
﹣Can I help you,Sir?
﹣Yes,please.I am____ a blue T﹣shirt.( )
A.looking upB.looking for
C.looking afterD.look through
I can't hear you. I_______ to an English speech.( )
A.am listeningB.was listening
C.listenD.listened
Look! The Smiths (eat) dinner in the kitchen.
She (study) English in the school since she left her hometown.
﹣﹣May I speak to Nick?﹣﹣Sorry,he's (go) to Paris and will be back in 2weeks.
﹣ Where is Linda? I can't find her.
﹣ She her homework in the library.( )
A.doesB.is doingC.did