Complete the sentences with the verbs in brakets.Use gerunds or infinitives. ( v-ing , to verb , verb ) 12. We stand up (greet- chào) .................................. our teachers . 13. We were so happy ...................................(know) from you. 14. I look forward to ............................. ( hear) from you. 15. Let's (play)................................ volleyball together! Các bạn giúp mình với mình cảm ơn

Để hoàn thành câu hỏi trên, chúng ta cần chú ý đến cách sử dụng gerunds hoặc infinitives với động từ trong ngoặc.

1. For the first sentence, we use the gerund form of the verb "greet" which is "greeting". So the sentence should be: We stand up greeting our teachers.

2. For the second sentence, we use the gerund form of the verb "know" which is "knowing". So the sentence should be: We were so happy knowing from you.

3. For the third sentence, we use the infinitive form of the verb "hear" which is "to hear". So the sentence should be: I look forward to hear from you.

4. For the last sentence, we use the base form of the verb "play" which is "play". So the sentence should be: Let's play volleyball together!

15. Let's play volleyball together!

14. I look forward to hearing from you.

13. We were so happy to know from you.

12. We stand up to greet our teachers.