1.Very large companies of oil are called oil (wells - giants - fields - industries )
2.My English language course (is finishing - finishes -finished - will finish ) on the first April

Find the mistake :
1.I know it's Diana'S birthday next week.I'll send her a card
2.Our bathroom has a hole through which water can pass . It's a leakage one
3.Running up to the top of tower made my head spill.