Which of the following sentences is a fact？（ ）
A．Beijing is the capital of China．
B．The new park looks beautiful．
C．Some subjects are difficult．
D．I think my pet dog is very cute．
The traffic is terribly busy in the morning． You'd better avoid in the center of the city．（ ）
A．driveB．drivingC．to driveD．driven
High﹣speed railways have developed rapidly in our country． Today China has high﹣speed rail network（铁路网） among all the countries in the world．（ ）
A．longB．longer
C．the longerD．the longest
China's star skater Wu Dajing won the gold in the men's 500 meters in Pyeong Chang Winter Olympic Games， setting a world record time of 39.584 seconds．
exciting news it is! Let's give him the thumbs﹣up（点赞）!（ ）
A．WhatB．What anC．HowD．How an
Be quick， we'll fail to catch the school bus．
Don't worry． It's only seven o'clock now． We still have enough time．（ ）
A．andB．butC．orD．so
Listen! It's raining outside．
Wow， look! The yard is full of rainwater now!（ ）
A．stronglyB．hardlyC．greatlyD．heavily