Future Simple: I can't believe that he'll make such an important discovery.
Past Simple: I can't believe that he made such an important discovery.
<span>1) We celebrated my birthday last week.
2) They danced yesterday.
3) We celebrated my birthday.
4) He washed the floor last week.
5) They lived in Kursk last year.
6) They planned to do it last month.</span>
1 such a
2 such a
3 such a, so
4 so
5 so
6 so
7 such
8 so
9 so
10 so
11 such a
12 so
13 so
14 so
15 so
16 so, such a
17 so
18 such a
19 so
20 such a
4.
1 so
2 such
3 such a
4 so
5 so
6 so
7 such
8 such a
9 such a
10 so
11 so
12 so, such
13 such a
14 so
15 such a
16 so
17 so
18 such
19 so
20 such a
3.didn’t disturbed
4.left
5.didn’t sleep
6.flew
7. Didn’t cost
8.didn’t have
9.were
1.b,2.a,3.b,4.a,5.b,6.a,7.a,8.b,9.b,10.a. Насчёт 3 и 9 не уверен. в третьем там зависит от степени вероятности, may-это разрешение и 50% вероятность, а might- это очень маленькая вероятность, может подходить и a и b. В 9 там или b или с . По идее должно быть вместо would ice, will melt.