Ⅰ.单句语法填空
1．He，along with his classmates，always ______(confuse)Lisa with her sister—they are so alike.
【答案】 confuses
2．Leaves are found on all kinds of trees，but they differ greatly ______ size and shape.
【答案】 in
3．It was the remarks he ______(make) at the conference that left me wondering about his real purpose.
【答案】 made
4．Shelly had prepared carefully for her biology examination so that she could be sure of passing it ______ her first attempt.
【答案】 at
5．You can't imagine what difficulty we had ______ (walk) home in the snowstorm.
