—Jack, this is the third time that you have been late this week.—Sorry, sir, but I was_____ for 15 minutes on the way here in the traffic jam.
The woman _______ is so nervous that she can’t express herself clearly.
Mr. Wang has made up his mind to devote all he could ______his oral English before going abroad.
Tom had no choice but to ________ an excuse to explain his being late.
--Go and ask Mr. White for help. --But I don’t know _____________.
--Jane, are you and your sister on a diet now? -- Yes, I want to lose some weight, and ______.