The Smiths________through millions of ups and downs since they moved to Sydney.[ ]

How was your school trip last weekend—Wonderful! We enjoyed __________ very much.

________ fun it is _______ tricks on those children!

Can Lihua help me with my English?　　　　- I regret to tell you her English is________ yours.

With the introduction of the computer, there is no complicated problem ________ can be solved in a few hours