I spend some time       English books every morning. 

It is recommended that the project ________ not be started until all the preparations have been made.

(2013·高考新课标全国卷Ⅱ)Since nobody gave him any help，he________have done the research on his own.

Don't blame such a small boy any more. Even the wisest___ make a mistake sometimes.

--- The task is challenging and demanding. Who do you think can make it? --- _______ my partner have a try? I think she is the right person to do it.