2. Give the third person forms of the verbs in these sentences.

Show whether you would pronounce the third person form as /s/,

/z/ or /Iz/

Example: We often see them. She …. often sees them. /z/

1. They work hard. He……………………………… / /

2. I often forget things. Mother…………………… / /

3. They drink a lot of coffee. He …………………… / /

4. We pay $ 50 a week rent. She …………………… / /

5. My children cry at sad films. Granny …………… / /

6. I rush around a lot. My brother ………………… / /

7. They often lose things. Sally ……………………. / /

8. We go to the dentist every six months. He ……… / /

9. We usually catch the 6 o’clock train. …………… / /

10. I often use his car. She …………………………./ /​

Сначала формулы . затем формулы двойного угла sin2α=2sinαcosα cos2α=cos²α-sin²α=cos²α-(1-cos²α)=2cos²α-1⇒  2cos²α=1+cos2α cos2α=cos²α-sin²α=1-sin²α-sin²α=1-2sin²α⇒  2sin²α=1-cos2α а) сos75°cos105°=cos(90°-15°)·cos(90°+15°)== sin15°(-sin15°)=-sin²15°=-(1-cos30°)/2=(cos30°-1)/2= ((√3/2)-1)/2=0,25√3-0,5б) sin75°sin15°=°sin(90°-15°)sin15°=cos15° sin15°=sin30°/2=1/4=0,25в) sin105°cos15°=sin(180°-75°)cos15°=sin75°cos15°=sin(90°-15°)cos15°=cos15°cos15°=(1+cos30°)/2=(1+(√3/2))/2=0,5 +0,25√3 2 способ формулы cosα·cosβ=0,5cos(α-β)+0,5cos(α+β) sinα·sinβ=0,5cos(α-β)-0,5cos(α+β) sinα·cosβ=0,5sin(α+β)+0,5sin(α-β) а) сos75°cos105°=0,5cos(75°-105°)+0,5cos(75°+105°)=0,5cos(-30°)+0,5 cos180°==0,5· √3/2+0,5·(-1)=0,25√3-0,5б) sin75°sin15°=0,5cos(75°-15°)-0,5cos(75°+15° )=0,5cos60°-0,5 cos90°=0,5·0,5=0,25в) sin105°cos15°=0,5sin(105°+15°)+0,5sin(105°-15°)= =0,5sin120°+0,5sin90°==0,5 sin(180°-60°)+0,5·1=0,5 sin 60°+0,5=0,25√3+0,5

A. What are we doing tonight? (я не очень понял что надо было в Этом предложении делать._."")

B. We has dinner with Jack and Mary.

A. But we had dinner with them last week!

B. Yes, but they want to tell us some good news.

A. OH, OK then. Should I buy some champagne?

B. It's 8 o'clock! Where have you been?

A. l'm sorry. When I walked home I stopped to buy the champagne. And then I saw Mark in the shop...

B. Well, hurry up. We had been late!

A. It's OK. I already ordered a taxi and I'll be ready in five minutes.

Объяснение:

надеюсь что это правильно._.'''

но я уверен на 92%, что это правильно

если не правильно, то я приношу свои ОГPОМНЫЕ извинения...