It’s ____ world of wonders , _____world where anything can happen .

________ astronauts cannot go to a baseball game or a movie in orbit , there are many familiar activities that they can still enjoy

t seen you for ages! Where have you been —I went to Ningxia and there for one year, teaching as a volunteer.

I’m waiting for the mailDo you know _____ it will arrive?

It remains to be seen _____ the plan can be carried out— It is up to you