英文句子（請各位大人幫幫小女子呢個忙）

1.Good students need to be helpul so that.........
a. they are regarded as enthusiastic people.
b. they are praised by the others.

2.Good students need to be hard-working so that........
a. they can get a pleasant result in the examinations.
b. they can learn a lot and widen their horizons.

3.What do you need to do so that you pass an English test?
a. You need to manage the time well to work hard, so that you pass an English test.
b. You need to be pay a lot of effort.

其實係咪一定要用' so that' ?
因為有好多野可以replace 依個字