Pre-test

Choose the correct expression.
  1. He didn't pass the test  [because] he didn't study for it.
  2. I've contacted the police  [because] Jack hasn't come home for three days.
  3. We enjoyed the trip,  [although] the weather wasn't good.
  4. She told me her phone number  [but] she didn't tell me her address.
  5. I'd like to know  [if] you are free tomorrow.
  6.  [When] I opened the door, I saw something really strange.
  7. I have some time  [but] I can't come to the party on Saturday.
  8. We said goodbye  [and] we left.
  9.  [Although] I have a lot of money, I can't lend you.
  10. I was very tired,  [so] I went to bed early.