$\text{46.}$ Lan suggested going to the cinema that night.

$\text{→}$ suggest + V-ing: gợi ý

$\text{→}$ tonight ⇒ that night

$\text{47.}$ My mother asked me not to study hard for my next examination.

$\text{→}$ ask sb to-V: yêu cầu

$\text{48.}$ We won't be allowed to go in the house.

$\text{→}$ be allowed to-V: được phép làm gì

$\text{49.}$ The man who is standing over there is my uncle.

$\text{50.}$ These exercises weren't finished on time.

$\text{→}$ Câu bị động thì QKD

$\text{→}$ nobody mang nghĩa phủ định

=>
46. Lan suggested going to the cinema that night.
-> suggest Ving : đề xuất, gợi ý/ câu tường thuật tonight -> that night
47. My brother asked me not to study hard for my next examination.
-> asked sb (not) to V : yêu cầu ai (không) làm gì/ mustn't : không được phép
48. We won't be allowed to go in the house.
-> bị động TLĐ will/will not (won't) be V3/ed
49. The man who is standing over there is my uncle.
-> who (đtqh chỉ người)
50. These exercises weren't finsihed on time.
-> bị động QKĐ was/were (not) V3/ed
-> nobody : không ai