Today some people call Amsterdam the “City of Bicycles”____ the convenience for bicycles there.
.Faced with a bill for $10,000, _________________.
.Modern forms of transportation and communication have done much to ________ the isolation(隔离) of life in Alaska.
.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.