Углерод: Водород: Валентность 6и 1 Надо найти Химическую формулу​

Помогите разобраться в управлениях примыканиях согласованиях. По самому простому,не могу понять тему. СРОЧНО

Помогите пожалуйста!!!

Use the words from the brackets to complete th sentences. Write them down.

Example: There was a tree across the road because (it / blown down / in the storm).      There was a tree across the road because it had been blown down in the storm.

1. They didn't have to call the doctor as (nobody / suffer / in the car accident). 2. Jim had to stay in the village because (his bicycle / steal). 3. They could easily reach the city centre because (a new road / build / through the city). 4. The play was a great success because (it / rehearse / so many times). 5.Tom couldn't leave the school grounds because (the hole in the fence / mend). 6.The could sit down to dinner, (the table / lay / already). 7. After (the food / unpack) they tried to make a fire. 8.After (the poem / memorize) Tim had to do the sums. 9. A small boy went down the street crying because (he / beat / by bad bigger boys).

Заранее огромное вам спасибо!!!