The climate conference was attended by 11,000 people, it the largest UN gathering ever held.
—You may find the key to the maths problem on page 107. —Ah, it’s so simple. I wonder why I _of that.
The long and tiring talk, filled with arguments and quarrels, ended in disorder, _________ no agreement at all.
Many people in the city wonder _____the city officials have the information they need to solve the problem.
So difficult _____ it to adjust to an English-speaking environment that he determined to learn English hard.
—It’s a lovely day, isn’t it? —Yes. I love ______ when the weather is like this. Why don’t we sit outside and have our lunch?