---Do you have enough students to carry the boxes?---No. I think we need ______students.

My host family tried to cook ________ for me when I studied in New Zealand.

(2013·太原一模)—Who is standing over there?—It must be ________ from an express company.

It was ___he said___ disappointed me. 

 —Look at your hands, John. ______ of them is clean.—OK, I’ll wash them at once.