初中英语题17
studying.
working out.
doing.
I think it should be "working on". Because you usually say "working on a project" instead of "working out". You usually say"working out a puzzle".
我觉得应该是WORKING ON.
study intensively
studying.
working out.
doing.
I think it should be "working on". Because you usually say "working on a project" instead of "working out". You usually say"working out a puzzle".
我觉得应该是WORKING ON.
study intensively