Употребите am,is,are,have,has по смыслую 1 This ____ an acute angle. 2 That ____ right. 3 Triangles...

To choose the correct forms of "am," "is," "are," "have," and "has" in the given sentences, we need to consider the subject of each sentence and the context. Here's a detailed explanation for each:

1. This ____ an acute angle.

   • Answer: is
   • Explanation: "This" is a singular subject, so we use "is" to describe the state or identity of the subject.

2. That ____ right.

   • Answer: is
   • Explanation: "That" is also a singular subject, and we're stating a fact or truth, so "is" is appropriate.

3. Triangles ____ three sides.

   • Answer: have
   • Explanation: "Triangles" is a plural subject, and we're talking about possession or characteristics, so "have" is used for plural nouns.

4. Their sides ____ equal.

   • Answer: are
   • Explanation: "Their sides" is a plural subject, and we use "are" to describe a characteristic or state of the sides.

5. That ____ enough. Thank you.

   • Answer: is
   • Explanation: "That" is singular, and we're confirming sufficiency or completion, so "is" fits here.

6. He ____ got two brothers and a sister.

   • Answer: has
   • Explanation: "He" is a singular subject, and for possession, we use "has" in the third person singular form.

7. ____ you got any English books?

   • Answer: Have
   • Explanation: In questions, especially in British English, we use "have" with "you" to ask about possession.

8. It ___ late?

   • Answer: Is
   • Explanation: "It" is singular, and we're asking about the time or state, so "is" is correct.

9. ____ it correct?

   • Answer: Is
   • Explanation: Again, "it" is singular, and we're asking about correctness, so "is" is appropriate.

10. The picture ____ on page 33.

    • Answer: is
    • Explanation: "The picture" is singular, and we're describing the location of the picture, so "is" is used.

In summary, the choice between "am," "is," "are," "have," and "has" depends on whether the subject is singular or plural and whether the sentence describes a state, identity, or possession.

1. This is an acute angle. (am)
2. That is right. (is)
3. Triangles have three sides. (have)
4. Their sides are equal. (are)
5. That is enough. Thank you. (is)
6. He has got two brothers and a sister. (has)
7. Have you got any English books? (have)
8. Is it late? (is)
9. Is it correct? (is)
10. The picture is on page 33. (is)