—Guess what? Tom has failed in the exam ____ second time. —How come? He is ___ second to none in English in our class.
It looks like the weather is changing for ______ . Shall we stick to our plan?
______ you eat the correct foods ______ be able to kiip fit and stay healthy.
By the time he realizes he ______ into a trap, it’ll be too late for him to do anything about it.
------Is there anything wrong , Bob? You look sad. ------ Oh, nothing much. In fact, I ______ of my friends back home.
The country has already sent up three unmanned spacecraft, the most recent ______ at the end of last March..