The missing boys were last seen _______ near the river.
A. to play B. to be playing
C. play D. Playing
— I’m afraid the date for the interview doesn’t suit me.
— _______, we can make it another day.
A. If so B. If necessary C. If not D. If possible
_______, his idea was accepted by all the people at the meeting.
A. Strange as it might sound B. Strange although it might sound
C. As it might sound strange D. As strange it might sound
_______ about wild plants that they decided to make a trip to Madagascar for further research.
A. So curious the couple were B. Such curious the couple were
C. Such curious were the couple D. So curious were the couple
_______ that he made an obvious mistake, Jeff went on with his speech.
A. Not realized B. Not to realize
C. Not to have realized D. Not realizing
ack went to college last year, _______ to return home until he achieves his goal.
A. determined not B. determining not
C. not determined D. not determining