31. Hillary Clinton arrived in Beijing yesterday, ______ the start of her short visit to China.
—Your brother was brave enough to tell the truth in public. ---Yes, and he will never regret_________ that. I admire him so much.
The best way Tom thought of_________ his strength is to run for 30 minutes every day.
If we_________ sunlight_________ a dry leaf with a piece of glass, it may start burning.
The government has taken a series of measures to _________ people’s needs in our country, which has provided good opportunities for many companies.
—It’s too hot. ---Let’s open the windows to allow the air to_________.