The student is very _________ to others.
A: helpful
B: productive
C: safety
A: helpful
B: productive
C: safety
举一反三
- The teacher was____________by what the student said. A: safety B: confused C: helpful
- It is____ if you know the language and some of the customs of the country. A: not useful B: not helpful C: very helpful D: very bad
- We should try to give others a helpful hand.
- For your safety and the safety of others, always （） the traffic signals. A: take care of B: pay attention to C: be aware of D: look out
- –thank you very much, you’ve been very .- always at your , madam. A: helpful, serve B: helpful, service C: help, service D: helped, service