Do you want to go hiking with me this weekend? –I’d love to. But I have to ________ my little brother at home.

Mike is my good friend. He often helps _______ with my English.

How are you getting on with your work? — I can’t do it __________ any longer. I will have to get help.

While you are having an exam, you must write as ________ as you can.

Mom, Where are my keys? Do you know?— I _____ they’re in your schoolbag.