The airline stewardess (空姐) said to passengers on ______ with a beautiful smile, “welcome _________!”

If your father knows that you cheated in the exam，he will be ________ a little angry.

There is ______ thing as a free lunch. There may be a hidden cost.

However weak we are，we can still do something against the powerful nature so long as we are     prepared．

His name was Tony and he seemed ____ like a human ____ a machine.

I have little doubt about his competence; ______, he is well-qualified for the job.

Come on, Maria! You can also enjoy_____ you have been dreaming of, if you don’t lose heart.

In my daily life I      ignore work , study , and other activities to check my phone for messages.

It was __    _ that he had to ask for help.

—Are you going to Dalian by air?
—No, the tickets are ____expensive for me.