D

1.studies / will pass
2.come / will call
3.will feel / don't give
4.Fred will be / Jack arrives
5.will know / don't reveal
6.eats / will be
7.aren't hurry / will meet
8.see
9.have / will you go
10.cooks
11.the weather is / we will drive
12.I will buy / it doesn't cost
13.will pick / come
14.will you speak / meet
15.If they win / they will be
16.she sends / they will receive 
17.I will come / I have
18.she doesn't pass / she won't get
19.I get / I will go
20.I will go / I don't feel

1.A
2.B
3.D
4.C
5.D

1.weren't
2.told
3.didn't know
4.Did Mai work
5.started
6.did he do
7.did he visit
8.weren't
9.don't see
10.was
11.watches
12.Were