After walking on the zigzag path to the mountain top for a few hours, the tourists gathered under trees_____ shade and______ down to have a rest.
It is ______ he often fails in exams ______ makes his parents worried about him.
The project ______ by the end of 2007, will expand the city’s telephone network to cover 2,000,000 users.
The Great Western Development ___ a bridge between China and the rest world, promoting the common economic development and prosperity of China and the world at large.
Varieties of programs in the TV station ______ many different types of interest and taste among the public.
The students entered the classroom, smiling and ___, and ___ down to have their lessons.