" ________ fast Guizhou Province is developing!"
"Yes． It hosts the Big Data Expo every year．"（ ）
| A． |
What |
B． |
How |
C． |
What a |
It took us half___________ hour to read Little Women．（ ）
A．aB．anC．the
My mother ________ in the kitchen when the rainstorm came．（ ）
A．was cookingB．is cooking
C．cooks
A 3﹣kilometer﹣long bridge ________ in our hometown three years ago．（ ）
A．has builtB．is builtC．was built
Diana used to _________ to work， but now she is used to ________ because the road is crowded and she wants to keep fit．（ ）
A．drive； walkB．drive； walking
C．driving； walk
I found ________difficult for me to finish the work on time．（ ）
A．thatB．itC．this