It is the protection for the trees _______ really matters, rather than how many trees are planted.
__________ we had read your letter __________ the true state of affairs.
To his disappointment, the opinion he tried to stick __________ wrong.
–Excuse me, Madame. Is this plane __________ take off soon? –Oh, yes. In five minutes.
An awful accident __________, however, occur the other day.
Barrack Obama __________ President of the United States since 2010.