1) They were screening coal.
他们在筛煤。
2) They were shovelling coal up.
他们在铲煤。
3) They were mining for coal .
他们在采煤。
4) They are mining for coal.
他们在开采煤矿。
5) The men is looking for them.
人们正在找他们
6) They're planting trees.
他们在植树。
补充资料：他们
1.代词。称自己和对方以外的若干人。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条