选择正确的词填空。

1. There are a lots of things ____ I need to buy before  the trip.(that, who)

2. Summer is the time of year ____ the day is longer.  (that, which, when)

3. The computer ____ last week works well.(which we bought it, that we bought it, we bought, what

we bought)

4.A good friend is someone ____ makes me happy.  (which, /, that)

5. The young lady ____ you talked with is Lynn's mother.(whom, whose)