As he had to finish up his project by tomorrow, he burnt the midnight oil last night.
As he had to finish up his project by tomorrow, he burnt the midnight oil last night.
由于他明天以前必须完成他的计画，所以昨晚他开了夜车。
As he had to finish up his project by tomorrow, he burnt the midnight oil last night.
由于他明天以前必须完成他的计画，所以昨晚他开了夜车。