If -------,we will continue our experiment after office hoursA it be necessary B necessary C it being necessary D be necessaryC为什么是错的呢>?这能不能构成独立主格结构?

we will be happy if Tao Lei ( ) the awardA wins B won C will win 单项选择：What will we do if it tomorrow?A.will snow B.snows C.snow We will go for a picnic () we are free tomorrow.A before B if C after We shall leave tonight___.A,if will you agree B.if you will agree C.if you agree withD.if you don't agree if you stay here two more days,_______后面填什么A.so do we B.so will we c.we also do D.we will either We will you do _____ it ____ tomorrow?A.when,will rain B.if,rains C.while,rains D.if,will rain If we protect the environment,we will protect_(we). We think __planting trees will help the enxironment A.if B.whether C.that Dwhen If it ( )snowy tomorrow,we will make a snowmIf it ( )snowy tomorrow,we will make a snowmanA will be B is C was we will go hiking ( ) it is very cold tomorrow A even if B what if C as if D if not If it _____ tomorrow,we will go to the park.(A) rain(B) will rain(C) rains并说明理由 If you go to Beijing,we( )miss you A.will B.are going to C.will be D.are We're not sure if it( )tomorrow.If it( ),we won't climb south hill.A.will snow,snows B.will snow,will snow C.snows,snows D.snows,will snow 选哪个?为什么? 关于if的I'm not sure if it_____tomorrow.We won't climb the hill if it_____.A.snows,snows B.will snow,will snow C.snows,will snows D.will snow,snows .----Don't worry.we will be there on time.----___the train is late?A what if B If C Even if D What we will meet again if we have chances什么意思? We will feel l______ if we have no friends we will meet again if we have chances怎么翻译?