How long ________ they ________ (dig) the ditch?
have … been digging
暂无解析
________(catch)intherain,hewaswettotheskin.
Ipreferthisdiagram________thatone.
Iwishyou________likethat.
Hefellasleepimmediatelylastnight;hemust________(be)verytired.
________(fail)severaltimes,theyneedsomeencouragement.