Find the mistakes in the following sentences. 1. there are a wardrobe, a writing-table and a bed in my room. 2. there are no computers in your school, aren't they? 3. do your grandparents live with you, don't they? 4. it's half past three on my watch. 5. they always try to spent holidays together. 6. it usually isn't snow in summer in our region. p.s: нужно в каждом предложении заменить или убрать одно слово.

1. There IS (первое существительное в ед.числе, are - глагол мн.числа)
2. ARE they? (В первой части предложения отрицание, во второй части должно быть утверждение)
3. Убрать Do (В этой схеме первая часть строится как утверждение) 
5. SPEND, либо убрать always (Предложение может быть либо в либо в настоящем)

Извините, в 4 и 6 ошибок не нашла, надеюсь хоть чем-то.

1. There is a wardrobe, a writing-table and a bed in my room.
2. There are no computers in your school, are there?
3. Your grandparents live with you, don't they?
4. It's half past three according to my watch.
5. They always try to spend holidays together.
6. It doesn't usually snow in summer in our region.