–It’s dangerous here. We must not let people fall down.
--You’re right. Come on!
A.stop... by falling | B.keep...falling |
C.protect...falling | D.prevent...from falling |
–It’s dangerous here. We must not let people fall down.
--You’re right. Come on!
A.stop... by falling | B.keep...falling |
C.protect...falling | D.prevent...from falling |