﹣_____________ has Hong Kong been back to our motherland?
﹣For 20 years.How time flies!( )
How soon
How long
How often
China is making _______ to help more developing countries fight against COVID﹣19.( )
a decision
a mess
an effort
a mistake
﹣﹣﹣I'm proud of our China's Tiangong Station plan.
﹣﹣﹣Me,too.We have taken another step ______ our space dream.( )
behind
towards
across
besides
Mrs.Jones ______________in the garden at this time yesterday.( )
worked
was working
has worked
_____it over,and you will be able to work out the problem.( )
Thinking
To think
Think
I like smart clothes ____are made of silk.( )
who
which
what