I’m taller than Bill, but I sit _____ him. [ ]

Is this red bag yours?—No, it isn’t. is that black one.

How many students are there in your school?— There are 2,000 students here __________.

Millie is______ clever a girl that she has worked out _______difficult math problems.

When did you come back from Beijing?- _____the morning of April 18th.[ ]