I began c_ how long it would take to get to the airport if I set off at 4:00

I began c_ how long it would take to get to the airport if I set off at 4:00 I wonder how long ago this radio factory-----a has begun b begins c began d has started 'How long can I how long will I wait How long I can hold .I’d like to know ________ Chinese.A.when he began to learn B.when did he begin to learnC.when did he begin learning D.for how long he began to learn 直接引语和间接引语I'd like to know _____ Chinese.A.when he began to learnB.when did he begin to learnC.when did he begin learn D.for how long he began to learn No one knows exactly how the earth began,as it happened so long ago.怎么翻译 How long will I have to How long I have to wait I remember,no matter how long, How long I ____(borrow) your book? 英语翻译请帮我把下面一段英文翻译成汉语,要通俗易懂的,Recently,I have no idea how the.May be a long time,taste of life makes me feel empty,Always a lot of memories of emptiness.I began to sleep i even began to blame .I always s 高中英语语法I began to study English three years ago.How long did you study English last year?两句话中为什么动词都是用原形study而不是studied? I'd like to know __ chinses.A.when he began to learnB.when did he begin to learnC.when did he begin learning D.for how long he begian to learn How much can I afford?How long can hold? how long may i take this book还是how long may i keep this book how long is it ___the class ___?A when .. begins B when .. began C since.. had begun D since .. began选择D 是为什么么呢