Thank you for_______ my dog.

．—Remember the first time we met?—Sure．You ____in the supermarket

are living in ______ world ofdeveloping, ______ world where any problemcan be solved in a peaceful way

When he returned , he agreed to the publisher’s request _______ he should write a book for boys based on the life he experienced.

______ useful tool the computeris! — I agree. It’s ______ interesting as well.