_______ his arrival at the airport , the film star was recognized and soon surrounded by a group of film stars.
—You don't seem to be quite yourself today.What's wrong? —Oh, I'm suffering from a cold.Nothing serious ________.
—May I speak to Mr.Smith? —I am afraid not.He is at a meeting now.It's not ________.
________ his strength failed and he dropped behind in the race.
To tell the truth, what you said was too ________ for us to understand.
In order to be a strong partner with the AsiaPacific region, American President Obama thinks it is ________ to have a strong relationship with China.