Beijing Expo 2019 opened to the public ________ 29th April． It will last over five months．（ ）
A．atB．inC．onD．of
Several journalists _______ the lawyer about the international case an hour ago．（ ）
| A． |
interview |
B． |
interviewed |
| C． |
will interview |
D． |
had interviewed |
Do you know ______ a 5﹣day trip to Hong Kong costs？
I guess it's about¥4，000．（ ）
| A． |
how fast |
B． |
how long |
C． |
how soon |
D． |
how much |
Some exchange students _______ with their host families this time yesterday．（ ）
| A． |
are chatting |
B． |
will chat |
| C． |
were chatting |
D． |
have chatted |
Nowadays people wish to have ______ food than before as their life improves．（ ）
| A． |
healthy |
B． |
healthier |
| C． |
healthiest |
D． |
the healthiest |
Alex believes he will soon be able to play chess as ______ as the computer．（ ）
| A． |
well |
B． |
better |
C． |
best |
D． |
the best |