1.If I'm not invited, I won't go to party
2.Is this book not the same as that one
3.There was something wrong with the car last night
4.His illness was caused by a great deal of work
5.Jason sent me a package in the form of post
6.We will fail to arrive there in time if we don't set off now
7.You will forget my telephone number unless you write it down
8.The computers in our classroom are linked with the Internet
9.Mr Brown works as a n engineer
10.It's easy for you to work out the problem
11.John and I had a good time last night
12.My sister has made up her mind to quit the job
13.Get up now,or you'll miss the early train
14.He didn't feel like going to work
15. It took me half an hour to prepare the speech
16.It's very kind of you to help me with this physics problem
17.We should help our parents do the housework
18.The two friends were so excited that they forget the time
19.So few people came to buy books that the bookshop was closed early
20.Alex is working hard so that he can enter a good high school