香港所需淡水资源几乎全部依赖大陆提供，原因是（）
Thankyouforyourhelp,_____wecouldnothavefinishedtheworkintime.
I______thatIwereabird.
____thecenterofourplanetarysystemwasconsideredasheresybythechurchintheMiddleAges.
Thereisatree____agroupofLeaguemembersoftenplaychess.
Hiscompanionshavethreatenedto__hiscrimestothepolice.