Look at the umbrella[改为祈使句的否定句]

Look at the umbrella[改为祈使句的否定句] look at the terrible weather!If only I ___the umbrella!...look at the terrible weather!If only I ___the umbrella!A.had brought B.bring C.would bring D.have brought为什么选A,D为什么不对? Look and listenIt's raining hard.PutOn a raincoat,Lucy.I don't like the raincoat.Iwant my umdrella.Where's your umbrella?Mm…Mum!Mum!Look at the dog.He's holding my umbrella! Look At The Sky look at the boy. look at the Look at the picture Look at the 造句 look at the look at the chart look out at the look at the beach Look at the blackboard look at the Look at the look at the ( ),please LOOK AT THE STARS Look at the ears!