Although he was in poor health, Robert succeeded ______ other more famous engineers failed.
. The two birds _________ each other in shape and color. In other words, they ________ each other in shape and color.
. –What have been doing _______? I’ve been so little of you. --I have to leave early for work and comes home very ________.
. __________ about wild plants that they decided to make a trip to Madagascar for further research.
. Allan’s new MP4 is only about 10cm________ 8cm_______125 grams.
. Come nad see me whenever _____________.