Air transport companies use different planes__________. in the development of air transportation。 the earliest passenger flights were successfully operated。 to make travel easy and pleasant for the passengers。 to provide different services。 the shortage of qualified pilots。 traveling by air was very cheap。
I tried very hard to persuade him to join our groups but I met with flat refusal. disapproval。 rejection。 refusal。 decline。
He failed to carry out some of the provisions of the contract, and now he has to take charge of the consequences. answer for。 run into。 abide by。 step into。
She can speak French and German，let alone English. to say nothing of。 to speak nothing of。 to talk nothing of。 to tell nothing of。
The information in the first paragraph is presented mainly through listing statistics。 telling a story。 pointing out similarities。 pointing out differences。
She was one of the leading writers in her age.
