The scientists were trying to look for all possible _______ as to where this species came from.
A．signals B．marks C．clues D．spots
A well-written speech ______ a lot, such as a good choice of words, a clear
structure, a distinct theme, etc.
A．calls on B．calls for C．calls up D．calls off
Lisa made a(n) _____ to help her husband with the problem, but failed in the end.
A．promise B．response C．decision D．attempt
I am really sorry if my comments on the matter ____ you.
A．beat B．defeated C．offended D．Injured
The chairman said in the meeting that he would be ________ towards all opinions
and consider them seriously.
A．respectful B．proud C．capable D．careful
The young man got up immediately as the woman got on the bus and let her _______ his seat.
A．share B．gain C．occupy D．capture
