He looks really worried. He be having some problems. -I guess so. He’s weak in math and physics.

The fire made _____ difficult to rescue the people trapped under the ruins in the earthquake.

（2007 年普通高等学校招生全国统一考试浙江卷，16） —He got his first book published. It turned out to be a bestseller. —When was _____? —_____ was in 2000 when he was still in college.

Susan is taller than ______________ in her class.

106 Where are my keys They seem to have____