14.I must drive to my daughter’s school right away. She is waiting for me to _______her _________.
(A) let...off
(B) pick...up
(C) seek...out
(D) invite...in
6. The euro is widely used to conduct international ______ and is an important national reserve currency.
(A) commercial
(B) revenues
(C) transaction
(D) transport
23. There is evidence that solar energy either is now economically competitive with conventional sources of heat ______ so within a few years.
(A) will be or
(B) but will be
(C) or will be
(D) and will be
2. The famous rock singer announced to his local fans that he would begin a worldwide tour to _____ his latest album.
(A) investigate (B) contract (C) promote (D) expand