I am wondering if he can finish the task on time though he promised that his team _____ the first in this competition.

At school, some students are active______ some are shy, yet they can be good friends with one another.

Sam ________ some knowledge of the computer just by watching others working on it.

Tomorrow would be Christmas Day, and she had only $1.87 ____.[ ]

The world has twice as much shipbuilding_______ as it needed in the 1980s.