th the guide leading the way, thevisitors were able to travel through the forest not by air but _____ foot.

When we got there, he was about to leave, so he only had time to explain _____ to us what he thought of our plan

The Smiths are looking forward to ________ Kunmingsome day.

__hard before, Tom is afraid offailing in the exam.

.Was it in 2000_________he was still in middle school_________this boy became an expert at computer?