Would it be ______ for you to pick me up atfour o’clock and take me to the airport

________ you write so well?— By reading and keeping diaries every day. [ ]

I’m sorry I got caught in the traffic；________, I could have been here sooner

In order to attract more online shoppers on Double-Eleven Day, the owners of Taobao promised that they would have those ordered goods _____ to their homes in less than 3 days.

There’s no doubt _____enough concern must be paid tothe problem of the stay­at­home children