scientiata have sent lots of spacecraft to_____other planets. A:look around B:look at

scientiata have sent lots of spacecraft to_____other planets. A:look around B:look at I,sent,you,have,E-mail,an 请问have people always sent postcards? 已经寄出是不是I have sent sth. your daught is ill.Have you sent for a doctor?sent for的意思 We shall ask for samples ____ and then we can make our decision.A. to be sent B. being sent C. to sent D. to have been sent I have sent you an e-mail啥意思谢谢 I have sent you an email about the laptop list I with to have this letter sent by fax. will have sent 是将来完成时态吗? More Chinese astronauts _____________ into space with the development of science and technology.A) have been sent B) will be sent C) have sent D) will send I haven't received the letter.It()to a wrong address.A.may send B.may be sent C.might have sent D.might have been sent They ________ here next Fridy A have sent B will be sent C are sending D have been sent 顺便翻译 how many message have sent?可以把have改成did吗 打错了 应该是how many messages have you sent?可以把have改成did吗 The old woman is said ---to her children last monthA to sent B to be sent C to have been sent A large number of engineers( )to Africa every yearsA.have sent B.will send C.are sent D.were sent说原因 The Taiwan spotted deer,Fan Xing and Dian Dian,( ) to the Chinese mainland on April 16,2011.A have sent B were sendingC were sent D had sent Those letters are _____ to the countryside right away.A.to be sent B.sending C.to have been sent D.sent为什么选A