The High Speed Rail is amazing． It makes travel_________．（ ）
| A． |
easier |
B． |
harder |
C． |
higher |
D． |
slower |
Father is too tired today．Don't call him it is necessary．（ ）
A．ifB．unlessC．whenD．whether
I will volunteer for a two﹣day home stay for an exchange student from the UK．I consider it a good chance to show Chinese food our kindness．（ ）
A．as well asB．so well asC．as good asD．so good as
Some primary and secondary schools winter sports to their courses since Beijing won the right to host the 2022 Winter Olympic Games．（ ）
A．addedB．will add
C．have addedD．were adding
More and more teenagers have poor eyesight， so parents and teachers should take actions the situation from getting worse．（ ）
A．stopB．stoppingC．stoppedD．to stop
This pair of trousers smooth because they are made of Chinese silk．（ ）
A．feelsB．feelC．is feltD．are felt