未知题型 I wish I ____ longer this morning, but I had to get up and come to class.(A) could have slept (C) might have slept(B) slept (D) have slept

未知题型 It is recommended that the project _____ until all the preparations have been made.(A) is not started (C) not be started(B) will not be started (D) is not to be started

未知题型 You will want two trees about ten feet apart, from _____ to suspend your tent.(A) there (C) which(B) them (D) where