If Muhammed ...... hard he would become a great Engineer.

If Will ..................... his term paper on time, he wouldn't have failed the class.

Which one of the underlined words or phrases is INCORRECT? I don't had enough money to buy a bus ticket, so I'll…

I'm sure you will all enjoy ....... in the course Physics 101. The teacher is great.

Muhammad: Are they your children? Ahmad: No, they aren’t. they’re………

I have no idea how ............. to build a nest there.