1they have kept （）on this project for thrree years ( work )2the children will climb the hill if it ( ) tomorrow A won,t rain B didn,t rain Cdoesn,t rain D isn,t raining 3Neither his father nor he ( ) the island A has been to Bhas gone to C have b

kept on they had this really low doorway and I （kept on） hitting my head on it.这里填 kept on 1they have kept （）on this project for thrree years ( work )2the children will climb the hill if it ( ) tomorrow A won,t rain B didn,t rain Cdoesn,t rain D isn,t raining 3Neither his father nor he ( ) the island A has been to Bhas gone to C have b tthough it was late,they kept on working On Saturdays they（ ）have a picnic They urged that the library___ open during the vacation.a、must be kept b、 is kept c、 would be kept d、 be kept 我选择D选项,D选项为什么不对呢?老师请答疑,谢谢.We ____ on this project for four hours. Let’s have a rest.选项 They kept on walking ＿＿they found a lake.填while还They kept on walking ＿＿they found a lake.填while还是when? He（ ）working till he was seventy years old1.kept up 2.kept on 3.kept to 4.kept out The old man have ------ his relatives since he left the hometown.A kept up with B kept touch C kept in contact with D kept on with they felt very tired, but they kept on ( ) in the field. 22.They kept trying _____ they must have known it was hopeless.为什么用WHEN? being tired ,he still kept on working .------- ------- ------- -------- ------- ,he still kept on working （状语从句） I have kept the book （for a week）.提问()() have () kept the book? they have science (on tuesday and thursday）括号提问 They have math on Monday.（对划线部分提问） They have ----(没有）to do on sunday you will only make yourself more tired,------------on your feet.to keep keeping having kept to have kept On Sundays ,we often go _____(shop) with our parents.It's cold outside .1It's cold outside .Please put on your w_____ winter coat.2They kept on talking until the teacher came in.(改为同义句）They didn't______ ______ until the teacher came in.3T They have math on Tuesday moring（对 on Tuesday moring提问）____ ____ they have math?