Answer_Key_Unit_11A_test.doc

Unit Test 11A Key

1              1 tube / 2 can / 3 cardboard box / 4 jar / 5 paper, plastic / 6 carton / 7 packet / 8 metal

2              1 up / 2 out / 3 back / 4 down / 5 out / 6 into / 7 up / 8 out

3              1 David and I have known each other for six months. / 2 I haven’t understood what he has been saying for thirty minutes. / 3 We have been building a house since January. / 4 They have been coming to this café for ten years. / 5 I’ve wanted that car since I was a boy. / 6 They have been working on a new project since Monday. / 7 Peter has been using the computer for six hours. / 8 The company has been in trouble for three months.

4              1b / 2c / 3d / 4a / 5b / 6a / 7b / 8c

5              1 has it? / 2 don’t they? / 3 aren’t they? / 4 couldn’t you?              / 5 doesn’t it? / 6 can’t you? / 7 doesn’t he? / 8 could it?