16.Hereyoucanseestreamsdownintothevalleydayandnight.A.runB.ranC.runningD.torun17.Streamwaterbecomesmuddywhensoilfromthehillslopes.A.washawayB.washesawayC.washingawayD.towashaway18.Theystoodthereforan

Question

16.Here you can see streams ______ down i
nto the valley day and night.
A.run B.ran C.running D.to run
17.Stream water becomes muddy when ______ soil from the hill slopes.
A.wash away B.washes away C.washing away D.to wash away
18.They stood there for an hour ______ the boys _______ the game.
A.watch; play B.watch; playing C.watched; played D.watching; playing
19._______ what had happened to him ,they looked worried.
A.Not knowing B.Knowing not C.Having not known D.Having known not
20.Muddy water _______ soil cannot run straight down because there are terraces on the slopes.
A.carries B.carrying C.carried D.being carried

Answer 1

16-20 CCDAB