when we were on a voluntary when The correct answer is B. "went". The sentence is in the past tense, and "went" is the simple past form of "go". So the full sentence should read: "When we were on a voluntary tour, we went to public places to collect rubbish every day."
when we were on a voluntary tour When we were on a voluntary tour, we went to public places to collect rubbish every day. Khi đi du lịch tình nguyện, ngày nào chúng tôi cũng đến các điểm công cộng để thu gom rác.
avoid water when you take a bath And don't bring water--you can't take it through security. You should buy some at the airport before you board the plane. • Remember to bring a good book or your tablet. Check-in bag • Your check-in bag should be strong. • Your clothes, shoes, and other everyday things should go in your check-in bag. • Make a list to help you remember
