N1 one key + two keys=three keys. four cats -three cats=one cat. two keys + three keys=five keys. six cats+two cats= nine cats. со вторым думаю справится легко.
Buckingham Palace! Запомни!
1.buy
2.knit
3.sell
4.spend
5.choose
6.give
1) What do you know about prehistoric life? About dinosaurs? Are there any mysteries about them ?
2)what were dinosaurs like? Were they alike? Were they different?
3) have you seen any films or cartoons about dinosaurs ? What are they? Were the creatures angry or friendly there?
1.have flown.
2.Have you ever eaten.
3.have hurt.
4.has worked.
5.Have you ever tried..? I have never tried..
6.have lived.
7.How long have they been..
8.have known, they were.
9.Have you told..? I haven`t told..
получается, везде кроме одного Present Perfect*О* но это вроде точно так