Let’s do it ______. There is only five minutes left.

Beijing has ________ many buses that there is often a traffic jam in rush hours.

It is raining hard. Will you go to your friend’s birthday party?—I promised him to go, but the heavy rain really places me in a ______. I’m not sure whether I will go or not.

The students in our school help the children in Yushu . [ ]

_____ your attention focused on practicing, and you can reach your goal of becoming an excellent pianist.