With a lot of homework _________last weekend, Tom didn’t go to the movies with his friends.

__ we admit that there arestill some problems about the system of modern education,we don’t mean that it is of no use.

Shall we go to the amusement park this Sunday, mum—- Sure, ________ I am busy.

Have you ___________?—No. I had the wrong number.

The book is so boring. I can’t find_______________ in it.