The place _______ the bridge is supposed to be built should be________the cross-river traffic is the heaviest.

_____ the students in our class have incommon is _____ they are all working hard to pursue their dreams.

Because he didn’t finish the work on time and was fired by the company, he was very ______ about it. [ ]

Doctor Nathan is said to have been ________to researching into wild animals inAfrica for more than ten years.

________ a strange plant！I’ve never seen it before.(2011·辽宁，33)