Today the festival … (become) the most important event of the year.

Two kilos is\are pretty small for a newborn baby.

The United States is\are anxious to improve the situation.

The research has contributed a great deal … our knowledge of cancer.

James can't afford to buy this car. Why … look for a model that's cheap enough to meet his needs?

Learning a new language can boost your confidence, which … turn helps you communicate better in social situations.

Hamburger and chips is\are not a very healthy lunch.

Our company takes pride in ensuring that our deliveries are made on time, even when it's pouring … rain.

He showed us (1) two apartments, but we didn't hise neither of them (2) because (3) the rooms were facing a busy street (4) lined with some noisy bars and clubs(5)

I joined to see what my grandchildren are doing, as my daughter posts lots videos and photos of them. It's a much better way to see what they're doing than waiting for letters and photos in the post. (лишнее)

Mobile phones … (use) in many areas these days.

I went to the cafe (1) to talk to the manager or the waiter but none of them (2) could help me (3) find the wallet that (4) I had lost the day before (5). - где ошибки?