Помоги выбрать правильную форму глагола в упражнении

Конечно, давай сделаем это упражнение! Нужно выбрать правильную форму глагола, чтобы предложение звучало грамотно. Вот как я думаю: 1. Listen! I **hear** voices. I **think** the children **are having** fun now. 2. The dog **is wagging** its tail now. I **think** he **wants** to go for a walk now. 3. She usually **prefers** to stay at home, but this weekend she **is going** on a trip. 4. The children **are listening** to music at present, but they usually **do** their homework first. 5. He **is lying** to me now. I **do not believe** him. 6. Rina **is doing** her H.W. now because she **wants** to finish them before the movie. 7. Listen! I **hear** the telephone. It **is ringing**. I **think** I. 8. We **are looking** at the picture now but we **do not like** it.