1. --- Who cooked the meal? ---Actually, it was a ____ effort .
A. joint B. join C. joined D. jointed
2. The country has already sent up three unmanned spacecraft, the most recent ____at the end of last August . A. has been launched B. having been launched
C. being launched D. to be launched
3. untidily and in a strange way ,my brother must have appeared to the people to be a silly boy .
A. Dressed, spoken, presents B. Dressing, speaking ,present
C. Dressed, speaking, present D. Dressing, speaking ,be present
