Ms． Ling got a letter fromher pen friend yesterday．（ ）
| A． |
wrote to |
B． |
heard from |
C． |
waited for |
D． |
heard of |
Is our playground still over there？
No， a large library ________ on it two years ago．（ ）
A．is builtB．was builtC．has built
Slow down! Someone ________ the road．
Easy． I will．（ ）
A．has crossedB．was crossing
C．is crossing
Playing computer games too often ________ bad for us．（ ）
A．amB．isC．are
Stephen Hawking， a great scientist， died ________ the morning of March 14， 2018．（ ）
A．onB．inC．at
Mom， can you help me wash my clothes？
Sorry， dear． Help ________．（ ）
A．myselfB．ourselvesC．yourself